S1, E2: Kai-lan notices Ye Ye's gardening hat, and is inspired to make a hat of her own. When everyone in the backyard start making hats too, Kai-lan declares that they should have a hat parade! Rintoo makes a very original hat that everyone loves.  But when Hoho copies Rintoo's hat, Rintoo doesn't like it. Kai-lan and the viewer need to find a way to show Rintoo that copying can be a compliment, so the hat parade can go on!