Its Grandpas birthday! In an effort to keep Grandpa away from the house (for a surprise party), Caillou takes Grandpa for a walk on Blueberry Point. Caillou wants to surprise his grandfather with a basket of blueberries as a gift... and hes disappointed when he only finds a handful of berries. Grandpa insists spending time together is the best gift Caillou could give him... and hes plenty surprised when they arrive back at the house to find its full of family and friends.