The Celebration (1998)

The Celebration is a 1998 Danish film, produced by Nimbus Film and directed by Thomas Vinterberg, the first to be created under Dogme 95 rules. He was inspired to write it with Mogens Rukov, based on a hoax broadcast by a Danish radio station. Its original Danish title is Festen, and it was released under this title in the UK. The film tells the story of a family gathering to celebrate their father's 60th birthday. At the dinner, the eldest son publicly accuses his father of sexually abusing both him and his twin sister (who had recently committed suicide).

Respected family patriarch and businessman Helge (Henning Moritzen) is celebrating his 60th birthday at the family-run hotel. Gathered together are his wife Else (Birthe Neumann), his daughter Helene (Paprika Steen), his sons Michael (Thomas Bo Larsen) and Christian (Ulrich Thomsen), and other guests. Christian's twin sister, Linda, recently committed suicide at the hotel.

Before the celebration dinner, Helene finds Linda's suicide note, but hides it after becoming upset by the contents. Later, during dinner, Christian makes a speech to the family in which he accuses his father Helge of sexually abusing him and his late sister Linda. Helge's family and friends initially dismiss the accusations as absurd, a joke, or a figment of Christian's imagination. In a one-on-one conversation, the seemingly baffled Helge asks Christian about his motivations and Christian recants his accusation—until being spurred to action by hotel chef Kim (Bjarne Henriksen) a childhood friend who knows about the abuse. During a toast, Else makes a series of back-handed compliments towards her children, accusing Christian of having an overactive imagination as a child, and asking him to apologize. Christian responds by accusing her of interrupting Helge during one of the rapes, yet not interfering with the incident. An enraged Michael ejects Christian from the hotel. Wikipedia