Rick the louse's dream is to travel the world. He jumps on someone's head and off he goes!

Bored with life at home, a young louse named Rick sets out to travel the world. Hopping from head to head, he meets many lice each odder than the last, and has many exciting adventures: there are green-haired heads and hairless heads, lazy lice and workaholic lice, angry lice and hungry lice... But none of them get along very well until Rick teaches them how to live together.