Wally, Beaver and their friends break a window at the Cleaver's house when they play baseball on the street. Ward and June aren't overly upset, but tell the boys to use their common sense in the future and never to play baseball so close to the house again. The next day, while Ward and June are gone for the morning, Wally and Beaver wait for Eddie Haskell to head over to Metzger's Field to play baseball, when Wally obliges Beaver's request to pitch him one. Wally figures it should be all right since Beaver always strikes out. This time Beaver does manage to connect to the ball, which ends up cracking a window of their parent's car. Not wanting to get into trouble especially after what their parents told them not to do, Wally and Beaver decide to get the window repaired before their parents get home, which will require them to raise $16. If they can't get raise that much money so soon, they will instead try to hide the fact of the broken window until they can get it fixed. They learn they won't have much time as their parents want to take the car out the following day for a family outing.
—Huggo