Grandpa brings out his telescope and introduces Caillou to constellations, planets and the moon.
Things that go bump in the night, and others that light up the sky, are on everyone's mind today. A family corn roast dinner at Grandma and Grandpa's under the star-studded sky prompts Grandpa to bring out his telescope and introduce Caillou to the constellations, planets, and moon. Grandpa discovers a new planetarium is opening and there's a prize for the best space costume. Caillou is thrilled when the winner turns out to be...a surprise! But fun turns to fear at bedtime when Caillou decides that a monster is lurking in his room. All's well when Mom and Dad unmask Caillou's monster as a tree branch on the window! Then, during a winter storm, the lights go out and Caillou is very afraid. Dad builds a fire in the fireplace and the family pretends they're camping. They even toast marshmallows!