On a rainy night, a private lodging reservation turns into an unexpected double booking, and the management company cannot be reached. Married woman Aya and office worker Tatsuya are forced to spend the night together as complete strangers. Through awkward conversation, they become aware of each other's loneliness, gradually letting down their emotional barriers under the same roof. Drawn to one another, each intimate encounter slowly closes the gap between their hearts. An unforeseen situation gives rise to a connection that deeply binds their souls together.