The gang is visited by old friends when Cody's girlfriend Barbara, Zack's friend Bob and London's rich friend Chelsea board the ship. While Zack wants to spend some real guy time with Bob (as he thinks Cody is boring and girly), Cody worries about how he should break up with Barbara, as he is in love with Bailey. However, in secrecy, Bob and Barbara are a couple and Barbara is stressing about how to break up with Cody. Meanwhile, London tries to cover up all aspects of living like normal students throughout Chelsea's stay, but it gets harder and harder and almost impossible.