It's Caillou's birthday, and he's hoping for a particular special dinosaur. His grandma gives him a present. He opens it. It's a t-shirt with a picture of the special dinosaur on it, but no special dinosaur. Caillou's upset by it. The guests arrive, and so the play some games. Then it's time to blow out the candles on the cake. Caillou holds his breath as he makes his wish, then he blows the candles out. Then he has the cake. Caillou's mom then gives him another box. It's the special dinosaur!. Later, Rosie spills ice cream on Caillou's clothes. Caillou then puts on the special dinosaur T-Shirt that grandma gave him.