The story is set in a fictional near-future society where residents' marriages are strictly controlled and managed. According to regulations, singles are to be transferred to a hotel, where they must find a matching partner within 45 days. The losers will be transformed into an animal of their choice and exiled to the forest. In order to extend the 45-day deadline, the singles in the hotel will also hunt other escaped singles in the forest. The protagonist of this film, David (Colin Farrell), was sent to the hotel with a group of singles. He endured the various harsh regulations here, and also actively looked for a partner in the various blind date occasions provided by the hotel. As the deadline approached, David had not found a suitable partner. After failing to match with a woman, he fled to the forest outside the hotel, where the escaped singles lived. However, in this habitat where singles rebel against the hotel system, there is another completely different system...