Officially becoming a member of their group, according to Sheldon, Penny has huge problems fitting in with the house rules. When Penny gets “3 strikes”, she is banished and can’t even talk to Sheldon anymore, putting Leonard in a difficult situation where he must choose which side of the argument he should stay on. Meanwhile, Penny declares a war between Sheldon and her, where the weak sides of them both are exposed; Penny’s lingerie is put out on a telephone wire, while Sheldon’s “laundry day” is ruined when all the machines are taken, and there seems to be no end of this war.