Elise, an adult in the making, is invited to a birthday party. For one evening, she meets two brothers on a trip to Intense Island. All it takes is one look, one conversation, for the young woman to immediately fall under their spell. Perhaps it's in the most unexpected places that the best encounters take place... During a trip to visit her family, Elise invites the two young men. What follows is an atypical adventure, in which complicity, laughter and doubts mingle, for better or for worse. Where will this excursion take the trio?