Clarissa's inexplicable obsession with Brian goes into overdrive when he's late for work and Danny tells her he's at the doctor's. Clarissa accesses Brian's personnel files, searching for clues about his health and breeding prospects, and she discovers it's his birthday. She persuades Danny to help her plan a surprise party, but their schemes are disrupted by the arrival of Brian's elderly father, who is even more eccentric than his son. Meanwhile, Brian's new sinus tablets seem to be affecting him very strangely.

Will Brian survive his birthday, and why have a stripper, a policeman and an alien arrived to help him celebrate it?