diff --git a/classes/pycord_bot.py b/classes/pycord_bot.py
index 0758a1d..5a18c49 100644
--- a/classes/pycord_bot.py
+++ b/classes/pycord_bot.py
@@ -7,7 +7,7 @@ from libbot.cache.classes import CacheMemcached, CacheRedis
 from libbot.cache.manager import create_cache_client
 from libbot.pycord.classes import PycordBot as LibPycordBot
 
-from classes import PycordEvent, PycordGuild, PycordUser
+from classes import PycordEvent, PycordGuild, PycordUser, PycordEventStage
 from modules.logging_utils import get_logger
 
 logger: Logger = get_logger(__name__)
@@ -83,6 +83,27 @@ class PycordBot(LibPycordBot):
     async def create_event(self, **kwargs) -> PycordEvent:
         return await PycordEvent.create(**kwargs, cache=self.cache)
 
+    # TODO Document this method
+    async def create_event_stage(self, event: PycordEvent, **kwargs) -> PycordEventStage:
+        # TODO Validation is handled by the caller for now, but
+        #  ideally this should not be the case at all.
+        #
+        # if "event_id" not in kwargs:
+        #     # TODO Create a nicer exception
+        #     raise RuntimeError("Event ID must be provided while creating an event stage")
+        #
+        # event: PycordEvent = await self.find_event(event_id=kwargs["event_id"])
+
+        if "sequence" not in kwargs:
+            # TODO Create a nicer exception
+            raise RuntimeError("Stage must have a defined sequence")
+
+        event_stage: PycordEventStage = await PycordEventStage.create(**kwargs, cache=self.cache)
+
+        await event.insert_stage(event_stage._id, kwargs["sequence"], cache=self.cache)
+
+        return event_stage
+
     async def start(self, *args: Any, **kwargs: Any) -> None:
         await super().start(*args, **kwargs)
 
diff --git a/classes/pycord_event.py b/classes/pycord_event.py
index 9146a8a..88d16f8 100644
--- a/classes/pycord_event.py
+++ b/classes/pycord_event.py
@@ -8,7 +8,7 @@ from bson import ObjectId
 from libbot.cache.classes import Cache
 from pymongo.results import InsertOneResult
 
-from modules.database import col_events
+from modules.database import col_events, col_stages
 from modules.logging_utils import get_logger
 
 logger: Logger = get_logger(__name__)
@@ -42,7 +42,7 @@ class PycordEvent:
     starts: datetime
     ends: datetime
     thumbnail_id: str | None
-    stage_ids: List[int]
+    stage_ids: List[ObjectId]
 
     @classmethod
     async def from_id(cls, event_id: str | ObjectId, cache: Optional[Cache] = None) -> "PycordEvent":
@@ -268,3 +268,12 @@ class PycordEvent:
 
     async def cancel(self, cache: Optional[Cache] = None):
         await self._set(cache, cancelled=True)
+
+    async def insert_stage(
+        self, event_stage_id: ObjectId, sequence: int, cache: Optional[Cache] = None
+    ) -> None:
+        self.stage_ids.insert(sequence, event_stage_id)
+        await self._set(cache, stage_ids=self.stage_ids)
+
+        # TODO Check if this works
+        await col_stages.update_many({"_id": {"$eq": self.stage_ids[sequence:]}}, {"$inc": {"sequence": 1}})
diff --git a/classes/pycord_event_stage.py b/classes/pycord_event_stage.py
index 51499d7..aa7b4d8 100644
--- a/classes/pycord_event_stage.py
+++ b/classes/pycord_event_stage.py
@@ -1,18 +1,241 @@
 from dataclasses import dataclass
 from datetime import datetime
-from typing import List
+from logging import Logger
+from typing import List, Dict, Any, Optional
+from zoneinfo import ZoneInfo
 
 from bson import ObjectId
+from libbot.cache.classes import Cache
+from pymongo.results import InsertOneResult
+
+from modules.database import col_stages
+from modules.logging_utils import get_logger
+
+logger: Logger = get_logger(__name__)
 
 
 @dataclass
 class PycordEventStage:
+    __slots__ = (
+        "_id",
+        "event_id",
+        "guild_id",
+        "sequence",
+        "created",
+        "creator_id",
+        "question",
+        "answer",
+        "media",
+    )
+    __short_name__ = "stage"
+    __collection__ = col_stages
+
     _id: ObjectId
-    id: int
-    event_id: int
+    event_id: ObjectId
     guild_id: int
     sequence: int
     created: datetime
     creator_id: int
-    text: str | None
+    question: str
+    answer: str
     media: List[str]
+
+    @classmethod
+    async def from_id(cls, stage_id: str | ObjectId, cache: Optional[Cache] = None) -> "PycordEventStage":
+        """Find event stage in the database.
+
+        Args:
+            stage_id (str | ObjectId): Stage's ID
+            cache (:obj:`Cache`, optional): Cache engine to get the cache from
+
+        Returns:
+            PycordEventStage: Event stage object
+
+        Raises:
+             EventStageNotFoundError: Event stage was not found
+        """
+        if cache is not None:
+            cached_entry: Dict[str, Any] | None = cache.get_json(f"{cls.__short_name__}_{stage_id}")
+
+            if cached_entry is not None:
+                return cls(**cached_entry)
+
+        db_entry = await cls.__collection__.find_one(
+            {"_id": stage_id if isinstance(stage_id, ObjectId) else ObjectId(stage_id)}
+        )
+
+        if db_entry is None:
+            raise RuntimeError(f"Event stage {stage_id} not found")
+
+            # TODO Add a unique exception
+            # raise EventStageNotFoundError(event_id)
+
+        if cache is not None:
+            cache.set_json(f"{cls.__short_name__}_{stage_id}", db_entry)
+
+        return cls(**db_entry)
+
+    @classmethod
+    async def create(
+        cls,
+        event_id: Optional[str | ObjectId],
+        guild_id: Optional[int],
+        sequence: int,
+        creator_id: int,
+        question: str,
+        answer: Optional[str] = None,
+        media: Optional[List[str]] = None,
+        cache: Optional[Cache] = None,
+    ) -> "PycordEventStage":
+        db_entry: Dict[str, Any] = {
+            "event_id": event_id,
+            "guild_id": guild_id,
+            "sequence": sequence,
+            "created": datetime.now(tz=ZoneInfo("UTC")),
+            "creator_id": creator_id,
+            "question": question,
+            "answer": answer,
+            "media": [] if media is None else media,
+        }
+
+        insert_result: InsertOneResult = await cls.__collection__.insert_one(db_entry)
+
+        db_entry["_id"] = insert_result.inserted_id
+
+        if cache is not None:
+            cache.set_json(f"{cls.__short_name__}_{guild_id}", db_entry)
+
+        return cls(**db_entry)
+
+    # TODO Update the docstring
+    async def _set(self, cache: Optional[Cache] = None, **kwargs) -> None:
+        """Set attribute data and save it into the database.
+
+        Args:
+            key (str): Attribute to change
+            value (Any): Value to set
+            cache (:obj:`Cache`, optional): Cache engine to write the update into
+        """
+        for key, value in kwargs.items():
+            if not hasattr(self, key):
+                raise AttributeError()
+
+            setattr(self, key, value)
+
+        await self.__collection__.update_one({"_id": self._id}, {"$set": kwargs}, upsert=True)
+
+        self._update_cache(cache)
+
+        logger.info("Set attributes of event stage %s to %s", self._id, kwargs)
+
+    # TODO Update the docstring
+    async def _remove(self, cache: Optional[Cache] = None, *args: str) -> None:
+        """Remove attribute data and save it into the database.
+
+        Args:
+            key (str): Attribute to remove
+            cache (:obj:`Cache`, optional): Cache engine to write the update into
+        """
+        attributes: Dict[str, Any] = {}
+
+        for key in args:
+            if not hasattr(self, key):
+                raise AttributeError()
+
+            default_value: Any = self.get_default_value(key)
+
+            setattr(self, key, default_value)
+
+            attributes[key] = default_value
+
+        await self.__collection__.update_one({"_id": self._id}, {"$set": attributes}, upsert=True)
+
+        self._update_cache(cache)
+
+        logger.info("Reset attributes %s of event stage %s to default values", args, self._id)
+
+    def _get_cache_key(self) -> str:
+        return f"{self.__short_name__}_{self._id}"
+
+    def _update_cache(self, cache: Optional[Cache] = None) -> None:
+        if cache is None:
+            return
+
+        user_dict: Dict[str, Any] = self.to_dict()
+
+        if user_dict is not None:
+            cache.set_json(self._get_cache_key(), user_dict)
+        else:
+            self._delete_cache(cache)
+
+    def _delete_cache(self, cache: Optional[Cache] = None) -> None:
+        if cache is None:
+            return
+
+        cache.delete(self._get_cache_key())
+
+    def to_dict(self, json_compatible: bool = False) -> Dict[str, Any]:
+        """Convert PycordEventStage object to a JSON representation.
+
+        Args:
+            json_compatible (bool): Whether the JSON-incompatible objects like ObjectId need to be converted
+
+        Returns:
+            Dict[str, Any]: JSON representation of PycordEventStage
+        """
+        return {
+            "_id": self._id if not json_compatible else str(self._id),
+            "event_id": self.event_id if not json_compatible else str(self.event_id),
+            "guild_id": self.guild_id,
+            "sequence": self.sequence,
+            "created": self.created,
+            "creator_id": self.creator_id,
+            "question": self.question,
+            "answer": self.answer,
+            "media": self.media,
+        }
+
+    @staticmethod
+    def get_defaults() -> Dict[str, Any]:
+        return {
+            "event_id": None,
+            "guild_id": None,
+            "sequence": 0,
+            "created": None,
+            "creator_id": None,
+            "question": None,
+            "answer": None,
+            "media": [],
+        }
+
+    @staticmethod
+    def get_default_value(key: str) -> Any:
+        if key not in PycordEventStage.get_defaults():
+            raise KeyError(f"There's no default value for key '{key}' in PycordEventStage")
+
+        return PycordEventStage.get_defaults()[key]
+
+    # TODO Add documentation
+    async def update(
+        self,
+        cache: Optional[Cache] = None,
+        **kwargs,
+    ):
+        await self._set(cache=cache, **kwargs)
+
+    # TODO Add documentation
+    async def reset(
+        self,
+        cache: Optional[Cache] = None,
+        *args,
+    ):
+        await self._remove(cache, *args)
+
+    async def purge(self, cache: Optional[Cache] = None) -> None:
+        """Completely remove event stage data from database. Currently only removes the event stage record from events collection.
+
+        Args:
+            cache (:obj:`Cache`, optional): Cache engine to write the update into
+        """
+        await self.__collection__.delete_one({"_id": self._id})
+        self._delete_cache(cache)
diff --git a/cogs/stage.py b/cogs/stage.py
index 8b1d9e3..fb587ab 100644
--- a/cogs/stage.py
+++ b/cogs/stage.py
@@ -2,6 +2,7 @@ from discord import SlashCommandGroup, option, ApplicationContext, Attachment
 from discord.ext.commands import Cog
 from discord.utils import basic_autocomplete
 
+from classes import PycordGuild, PycordEventStage, PycordEvent
 from classes.pycord_bot import PycordBot
 from modules.utils import autofill_active_events
 
@@ -14,8 +15,7 @@ class Stage(Cog):
 
     command_group: SlashCommandGroup = SlashCommandGroup("stage", "Event stage management")
 
-    # TODO Implement the command
-    #   /stage add <event> <question> <answer> <media>
+    # TODO Introduce i18n
     # TODO Maybe add an option for order?
     @command_group.command(
         name="add",
@@ -38,7 +38,27 @@ class Stage(Cog):
         answer: str,
         media: Attachment = None,
     ) -> None:
-        await ctx.respond("Not implemented.")
+        guild: PycordGuild = await self.bot.find_guild(ctx.guild.id)
+        pycord_event: PycordEvent = await self.bot.find_event(event)
+
+        if not guild.is_configured():
+            # TODO Make a nice message
+            await ctx.respond("Guild is not configured.")
+            return
+
+        event_stage: PycordEventStage = await self.bot.create_event_stage(
+            event=pycord_event,
+            event_id=pycord_event._id,
+            guild_id=guild.id,
+            sequence=len(pycord_event.stage_ids),
+            creator_id=ctx.author.id,
+            question=question,
+            answer=answer,
+            media=None if media is None else media.id,
+        )
+
+        # TODO Make a nice message
+        await ctx.respond("Event stage has been created.")
 
     # TODO Implement the command
     #   /stage edit <event> <stage> <order> <question> <answer> <media>