Someone's in the kitchen; it's Caillou! After making too much of a mess trying to help Mom, Caillou plays pretend-cooking with Sarah, and they bring Mom a bouquet of dandelions and a tasty cake made of toy blocks. The menu is just as playful at Grandma's, where she and Caillou make display goodies from cardboard and glue. Later, the results are equally gluey when Caillou tries his hand at making cookies. But he does much better the day he makes his own breakfast for the first time. Meanwhile, Rexy sends Teddy and Gilbert invitations for a costume party feast.