Monster Falls

One day when Dipper was taking a stroll through the woods and falls into a river called the Fluvius Cantatis. Mabel quickly follows, thinking it's a regular river. When they both got home they started mutating. Mabel turned into a mermaid and Dipper into a deerataur.

Meanwhile, Grunkle Stan finds a river quite a ways away from the place Dipper and Mabel found. He started to bottle and sell the water since it tasted so good. The whole town drank the water. Soon, Dipper finds that the Fluvius Cantatis ran far deeper than he expected....

A/N I do NOT own Gravity Falls. That right goes to Alex Hirsch.

#monsterfallsau

-Rouge Cur