When skeletal remains are found in a void space on a mothballed carrier, Rabb and Mac must investigate this mysterious occurrence. However, during their investigation, Rabb falls through an unmarked hole in a corridor floor, giving him a concussion. Rabb must find his way out to receive medical treatment. He begins to see the vague shape an Officer who leads him not to safety, but instead to a crew birth which might provide the answer to decade's old murder.

On his flight to Acapulco, Frasier meets a supermodel. The two hit it off big time, but before Frasier heads back, he is sworn to secrecy not to let anyone know he's dating her. It soon gets harder for Frasier to keep the secret, as others continue to think he can't find a girlfriend. Finally, when Frasier admits that he's going out with a supermodel, the others believe he's finally lost his mind.