"I sell love within a birdcage of 150 meters." Mayu is a 29-year-old divorced mother. She spends her days earning money in a relationship with between men and women without doing the deed. Her happy married life is short-lived and her son's sudden illness twists Mayu's fate further. With a tattered body and soul Mayu desperately struggles to provide for her son who is her only family. She continues to do her best waiting for the chance to escape the confines of her cage. However, she must face the cruel realities that fate had in store for her.