Tom and his friends come back from a night of partying. Exhausted, Tom falls asleep right on the windowsill. But when Mammy Two-Shoes catches him sleeping by daytime, she wakes him up, tells him to go on mouse patrol, and warns him that if he falls asleep again, he’ll be in trouble. Jerry easily takes advantage of this, as he tries to get Tom into just that trouble by luring him to sleep over and over again.