Caillou's Sea Adventure is an episode from Season 2 of "Caillou".
Caillou is inside the house, playing with his kite again. He tries to interest Gilbert in it, but Gilbert doesn't care. He goes downstairs to get Mommy because they're supposed to be going to the park, but Mommy opens the door and shows him that it's raining. She says that the forecast is for rain all day. Caillou is upset. He feels that he has nothing to do and doesn't like the suggestion of playing with Rosie. Daddy suggests that Leo could come over, so Caillou calls over to Leo's house, but is simply told that Leo isn't home, then he is discouraged that he had no one to play with and nothing to do. Daddy suggests that he use his imagination to find something to do. He finds Roise playing peekaboo, but gets upset because she's playing with something of his. He ends up deciding to let her play with it, though. He's gotten an idea of something he can do. He grabs the tablecloth off the kitchen table and creates his own pirate ship. Rosie comes in and wants to play, but Caillou won't let her. They argue and Mommy ends up taking the tablecloth away. Caillou tries playing a matching card game and Rosie interferes. At first he's mad again, but then he makes her laugh and decides to play with her. So they once again set up the pirate ship and Caillou gets a cardboard tube from Dad to use as a periscope. They pretend that they're trying to escape from Gilbert, who's a shark. Then, Daddy joins in the game and pretends to be a pirate.