Little Bear wakes up to find he has lost his trousers. After visiting his friends, one by one, he discovers they have all been using the trousers in very untrousery ways; as a sail for a boat, as a skiing hat, to carry bricks and as a flag. Little Bear is quite upset when he finally finds Bramwell Brown using the red trousers as an icing bag! But the cake Bramwell has made saves the day when it becomes a 'Trousers Day' cake and Little Bear finally gets his beloved trousers back.