It all started when Caillou's Mommy, Caillou and Rosie were going to the park. He wants to take his toy airplane with him to the park. Caillou imagined he was a pilot in a plane. After he was having so much fun he didn't have his running shoes on! Then Caillou slipped on a rock and he cried when his knees are bleeding. Then Caillou's Mommy took them home and fixed Caillou up. She had to get her doctor kit first. So she checks all over Caillou's body for broken bones. Caillou's Mommy was pretending to be a doctor. Caillou's Mommy first had to clean Caillou up. Then Nurse Rosie had to get a cotton swab from the tin. Then Caillou's Mommy cleans the bleeds up. Then she puts a bandage on Caillou's booboos. Then Caillou drinks juice to make his knees better. Then Rosie co-pilots Caillou and Caillou's Mommy back to the couch in a window seat. Caillou then ate cookies and drank juice. Then his knees were much better. Caillou took a few steps around the airplane to see if his knees were better. Then Caillou pretended he flew to the park with his friends. He was wearing running shoes now. Then everyone had a contest to see who could fly the fastest. Then Leo's knees were bleeding! Caillou pretended he was the doctor and he fixed Leo up in the same order like Caillou's Mommy fixed Caillou up.
- This is the only Season 4 episode where Caillou cries.
- This episode is also about airplanes.
- Gilbert and Boris are absent in this episode (They are not seen or even mentioned during the episode).
- After Mom says " Get better juice" the camera zooms on Caillou and Rosie and you can see that Rosie's right eye is twitching.
- Caillou said Clementine, Leo, and Billy are going to the park but when Caillou, Rosie and his Mom are at the park, Billy is not there.