diff --git a/subquery.py b/subquery.py
index c2db9c7..92d53c0 100644
--- a/subquery.py
+++ b/subquery.py
@@ -9,6 +9,7 @@
 from tc_hivemind_backend.embeddings.cohere import CohereEmbedding
 from utils.query_engine import (
     DEFAULT_GUIDANCE_SUB_QUESTION_PROMPT_TMPL,
+    GDriveQueryEngine,
     GitHubQueryEngine,
     prepare_discord_engine_auto_filter,
 )
@@ -94,7 +95,20 @@ def query_multiple_source(
     if discourse:
         raise NotImplementedError
     if gdrive:
-        raise NotImplementedError
+        gdrive_query_engine = GDriveQueryEngine(community_id=community_id).prepare()
+        tool_metadata = ToolMetadata(
+            name="Google-Drive",
+            description=(
+                "Stores and manages documents, spreadsheets, presentations,"
+                " and other files for the community."
+            ),
+        )
+        query_engine_tools.append(
+            QueryEngineTool(
+                query_engine=gdrive_query_engine,
+                metadata=tool_metadata,
+            )
+        )
     if notion:
         raise NotImplementedError
     if telegram:
diff --git a/tests/unit/test_gdrive_query_engine.py b/tests/unit/test_gdrive_query_engine.py
new file mode 100644
index 0000000..706d211
--- /dev/null
+++ b/tests/unit/test_gdrive_query_engine.py
@@ -0,0 +1,15 @@
+from unittest import TestCase
+
+from bot.retrievers.custom_retriever import CustomVectorStoreRetriever
+from utils.query_engine import GDriveQueryEngine
+
+
+class TestGDriveQueryEngine(TestCase):
+    def setUp(self) -> None:
+        community_id = "sample_community"
+        self.gdrive_query_engine = GDriveQueryEngine(community_id)
+
+    def test_prepare_engine(self):
+        gdrive_query_engine = self.gdrive_query_engine.prepare(testing=True)
+        print(gdrive_query_engine.__dict__)
+        self.assertIsInstance(gdrive_query_engine.retriever, CustomVectorStoreRetriever)
diff --git a/utils/query_engine/__init__.py b/utils/query_engine/__init__.py
index ce734c4..bfd2879 100644
--- a/utils/query_engine/__init__.py
+++ b/utils/query_engine/__init__.py
@@ -1,4 +1,5 @@
 # flake8: noqa
+from .gdrive import GDriveQueryEngine
 from .github import GitHubQueryEngine
 from .prepare_discord_query_engine import prepare_discord_engine_auto_filter
 from .subquery_gen_prompt import DEFAULT_GUIDANCE_SUB_QUESTION_PROMPT_TMPL
diff --git a/utils/query_engine/gdrive.py b/utils/query_engine/gdrive.py
new file mode 100644
index 0000000..5a775e2
--- /dev/null
+++ b/utils/query_engine/gdrive.py
@@ -0,0 +1,30 @@
+from bot.retrievers.custom_retriever import CustomVectorStoreRetriever
+from bot.retrievers.utils.load_hyperparams import load_hyperparams
+from llama_index.core import get_response_synthesizer
+from llama_index.core.query_engine import RetrieverQueryEngine
+from utils.query_engine.base_engine import BaseEngine
+
+
+class GDriveQueryEngine(BaseEngine):
+    platform_name = "gdrive"
+
+    def __init__(self, community_id: str) -> None:
+        dbname = f"community_{community_id}"
+        self.dbname = dbname
+
+    def prepare(self, testing=False):
+        index = self._setup_vector_store_index(
+            platform_table_name=self.platform_name,
+            dbname=self.dbname,
+            testing=testing,
+        )
+        _, similarity_top_k, _ = load_hyperparams()
+
+        retriever = CustomVectorStoreRetriever(
+            index=index, similarity_top_k=similarity_top_k
+        )
+        query_engine = RetrieverQueryEngine(
+            retriever=retriever,
+            response_synthesizer=get_response_synthesizer(),
+        )
+        return query_engine