Rallo thinks he's a stud bowler when he keeps scoring strikes by using the gutter rails. But when his prowess goes to his head, Donna reveals to him the hard truth: little kids mostly suck at everything.

Meanwhile, Cleveland, Lester, Holt and Terry decide that their friendship has become too predictable, and attempt to spice things up by taking a road trip to an abandoned amusement park.

When Donna discovers a rat loose in the house, she immediately moves herself and the kids in with her mother, Dee Dee, leaving Cleveland home alone to hunt down the rodent.
Cleveland takes advantage of having the house to himself and soon bonds with his new pet and best friend "Rat Lauer".

Meanwhile, Rallo and Jr. pretend they're spies, but things get out of hand when Junior won't reveal what's in his secret briefcase.