Dipper and Mabel hear rumours that a sea monster lives at the bottom of the local lake, and enlist Soos to take them out on a boat to see if the monster really exists.
Episode rating
Cast of episode
63
31
2
- Mabel Pines
- Dipper Pines
- Grunkle Stan
- Sheriff Blubs
- Tyler the Cute Biker
- Blendin Blandin
- Toby Determined
- Lazy Susan
- Reginald
- Additional Voices
- Manly Dan
- Additional Voices
- Additional Voices