Each summer, for his daughter Jeanne’s birthday, Albert takes her to visit a new country in Europe. For her seventeenth-year-old’s, he picked a small Swedish island, convinced they’ll find there the lost treasure of a legendary Viking. But the rented house he chose for their stay is already occupied by two women : Annika, the owner of the house, and Christine, a French friend. Albert’s careful planned holiday will then be totally disturbed – all of this to Jeanne’s delight…