diff --git a/internal/storage/mongo/workflows.go b/internal/storage/mongo/workflows.go
index 1b622c7..a99d210 100644
--- a/internal/storage/mongo/workflows.go
+++ b/internal/storage/mongo/workflows.go
@@ -12,6 +12,7 @@ import (
 	"forge.chapril.org/dune/jw"
 	"forge.chapril.org/losyme/errors"
 	"forge.chapril.org/losyme/util"
+	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/mongo"
 )
 
@@ -46,7 +47,25 @@ func (ms *mongoStorage) InsertWorkflow(wf *jw.Workflow, job *jw.Job) error {
 }
 
 func (ms *mongoStorage) Workflow(id string, mustExist bool) (*jw.Workflow, error) {
-	return nil, errors.NotImplemented()
+	ctx, cancel := util.CtxWithTimeout(5 * time.Second)
+	defer cancel()
+
+	wf := new(jw.Workflow)
+
+	err := ms.cWorkflows().FindOne(ctx, bson.M{"_id": id}).Decode(wf)
+	if err == nil {
+		return wf, nil
+	}
+
+	if err != mongo.ErrNoDocuments {
+		return nil, err
+	}
+
+	if mustExist {
+		return nil, errors.New("this workflow does not exist", "id", id) ///////////////////////////////////////////////
+	}
+
+	return nil, nil
 }
 
 func (ms *mongoStorage) UpdateWorkflow(wf *jw.Workflow, job, nextJob *jw.Job) error {