Marina and Fishtronaut have become really good friends with Nappy, the long-nosed Monkey. Zeek even begins to think that Fishtronaut and Marina prefer Nappy to him, so he decides to hang back and sulk while the other three take off to solve another case. The POP helps Marina and Fishtronaut to show Zeek how much he really means to them and that Nappy is a really good friend of all 3 heroes.