We find MONK at the bottom of the ocean scuba diving. He's delighted with this 'silent world'. He's scared out of his wits when MOUCH, the shark with braces, swims up behind him. The two friends exchange hugs, happy to see each other again. They start playing together: MONK tosses a plastic starfish and MOUCH fetches it like a little dog, all happy and excited. But it quickly appears that MOUCH has a problem: he has a toothache. Concerned, MONK does everything he can to help his friend pull the painful tooth out. But to put it mildly, it's not easy poking around in the mouth of a shark, no matter how nice it is! MONK ends up getting totally fatched and MOUCH finds his salvation in the CRAB BAND, that start playing their favorite game: torture MONK.