The Extravagant Illnesses [Les maladies extravagantes]

Louis, 17 years old, is a romantic boy, loving to spend time on a small island lost in the middle of a pond with his lover Thibault. But Thibault is in a relationship with Sophie. So, for Thibault to be all his own, Louis casts a love spell on him. When electricity shuts down during a party, Louis believes that it's the sign his spell worked out. But things don't turn out the way he hoped for.