Kseniya is a talented developer. But she fails during the presentation of the project and decides to go on vacation, renting a house on the ocean for a vacation. The house is equipped with an artificial intelligence named Marcus. He will satisfy any desire of the guest, support the conversation, arrange the delivery of everything necessary - in general, he will do everything for a comfortable stay. From the first cup of coffee, Marcus impresses Kseniya with his intelligence and wit. He anticipates all her desires - from what kind of wine she wants for dinner, right up to what kind of music should be played before going to bed. For the first time in her life, Kseniya feels like the center of attention - everything around is exclusively for her. The next day, Kseniya is going to leave the house, but it turns out that she is locked.