Calvin is home from school. Hobbes sees him from the window and prepares to pounce. Calvin stops at the door. Inside, Hobbes wonders what's happening. Calvin sits on the steps. Hobbes lies down. Calvin continues to wait outside. Hobbes falls asleep. When Calvin hears Hobbes snoring, he opens the door. He is pounced upon by Hobbes. Hobbes gives Calvin a definition of "cat nap".