Taiga, a boy who runs a guesthouse Familia on the beach in Guam. It used to be a home where everyone could feel at ease. However, he lost his parents five years ago, and in a blink of an eye, the customers disappeared and became an on-boro house. Taiga struggles alone to protect the house left by his parents, but a stray dog ​​settles in the lonely house, and the food is laughed at all over the island. One day, a girl in a maid who calls herself Jun suddenly appears under Taiga and is said to have come to make Taiga and her house happy. In fact, Taiga remembers that she was a former gangster girl who came home when her parents were. Jun at the time was a violent child who didn't know the love of her family. Taiga, who saw her, said, "Her happiness is a mon to make with someone!" And snuggles up to her heart of her Jun. Jun, who was saved by that word in the past, rushed to him again to save Taiga's pinch. At that time, a large number of stray dogs who had settled in the house came to mess up the house ... Jun tells Taiga that he can't protect him alone, but he is thrown out by Taiga, who misunderstands that it means "give up." Jun sees Taiga desperately defending his house by confronting the stray dog ​​alone, and tells him the words that Taiga once said, "Happiness is a mon who will make happiness with someone!" On the other hand, Taiga, who knew Jun's feelings, decided to borrow her help. She told me that her reward was not money but "to make Taiga's wife" ... Taiga is surprised by her unexpected remarks, but there is a figure of former mercenary Wednesday and former thief Olivia who were with Jun on the day he first came home. With such a reason, I decided to aim for the reconstruction of the guest house with three maids ...!?