Although Robbie is just as nervous as everyone else, his presence in the house during Mary's weekend stay causes a great deal of concern among the Camden's. Matt and Lucy are especially suspicious after Lucy accidentally finds a condom in a misplaced wallet. Imagine their surprise when they learn that the provocative prophylactic belongs to Simon - who just so happens to be spending the evening with his new lady friend, Sasha.

Max tries to stop Alex and Kyle from being buried alive in a cave filled with glowing blue crystals; Isabel is kidnapped by Grant Sorenson possessed by the alien parasite queen; Michael is shot while trying to protect Laurie.

Dylan is taken captive and forced to admit that he killed the Mobius leader and overthrew the Mobius government more than 300 years ago.

John is honored when he's asked to fill in for the mayor and be the commencement speaker at his old high school, until he discovers why the mayor dropped out.

Facing a lack of funds, Principal Li accepts a generous sum of money from a soda company, in exchange for letting them promote and advertise their product on campus. Daria has a problem with the fact that the school is being used in this manner, however, everybody--the school superintendent included-feels she has no right to complain since the arrangement is bringing the school the money it needs. Unfortunately, Ms. Li fails to meet the profit quota the soda company requires, and is forced to increase promotion of the product, to the point of including it in athletic uniforms and lesson plans. Ultimately the effort to amend the situation proves too much for her, and the soda company is forced to pull out of the deal (though it still leaves its logo in several strategically placed areas).

Richard and John's relationship grows more tense than ever and so they attend couples therapy; Jackson's presence has a profound impact on Elaine; Jackson represent a woman being sued for firing all her male employees.

Hurricane Honu is headed towards the islands and everyone is on stage one alert. Zack is trying to save his precious computer discs, but Sean warns him that all available shelter space must be saved for food and supplies. In the midst of the chaos, Sean gets a call from Jenna: she's stuck at Kaena Point because of a landslide and she's in danger of being wind-swept over a cliff. Sean goes to rescue her, only to discover that she's not in danger at all-she just needed a ride on the scarab to bypass traffic to go to a city council meeting in Kaneohe. She feels that all the panic over the hurricane is over-stated and that the islands stand to lose money because of the hysteria. Just then, the storm starts to hit. She tries to help Sean, but steers the boat into a reef, shearing off its propellers. Then, while trying to make up for her mistake, she winds up getting her foot caught in the anchor line and goes hurtling over the edge of the boat. Sean must brave the choppy waters to save her

After Deacon and Kelly's separation, Carrie begins to wonder about her own marriage. She and Doug agree to put their sex lives on hold for a few weeks because Carrie feels that they should resolve arguments verbally, not always physically. Meanwhile, Arthur dates a woman who claims she was once Frank Sinatra's girlfriend.

An ex-alcoholic is admitted with a bleeding oesophagus: his wife suspects that he's been drinking again, but is it fair to jump to conclusions? Meanwhile, the staff of Darwin Ward celebrate too hard in advance of Liam Evans's wedding, which does not go according to plan.