It's Gerard & Trees' wedding anniversary, so she has invited the entire family round for dinner. Unfortunately most of them positively refuse to speak to, let alone see one another.
Ellie has spend most of Saturday night at her girlfriend Angelique's house. The next day, Angelique's father (who also happens to be Gerard's boss) comes round with all sorts of accusations.
Belgian cousin Sandra predicts that someone will fall down the stairs in Plesterkade 17. Then Jet arrives, sporting a black eye, carrying her baby and determined to leave her husband Gilbert.
Gerard's old friend Willem asks if he can use the attic for a couple of nights (so he can invite a young woman). This means Gilbert's brother René has to move out. Then Willem's wife Do comes looking for him.
Gilbert's song is a success, meaning he can finally pay of his debts to his in-laws. Even more surprising is that Gilbert & Jet are suddenly on good terms with Wout & Loes. There is also a rumor going around about Ellie and René.