Stu's extended family take a ferry trip to scatter the ashes of a loved one at sea. Whilst looking for his diarrhoea medication in his car, Stuart discovers a stowaway, some class-A drugs and pornography prohibited by maritime law.
When his new girlfriend April goes into labour, Stuart quickly finds himself having to rely on his ex-wife Kate to get her to hospital. As Stuart thinks he's getting a handle on the situation, he is forced to deal with a sexually promiscuous father, a daughter with a newly-shaved head and the surprise return of his errant brother, who is on the run from some very unsavoury types.
And that's before Stuart has to enlist the help of one tipsy neighbour to help with another neighbour, who he finds naked and the victim of a DIY circular saw accident.
Semi-Detached - Series 1, Episode 3 Synopsis and Schedule