Saki Miyata (Mugi Kadowaki), a lawyer, boarded a taxi waiting in front of the company and told the driver, 'To Haneda Airport.' She's a client's toy maker's product, and she has to fly to Fukuoka to discuss a settlement with an injured consumer. When she woke up from a nap, the car was probably running on the highway in the opposite direction of Haneda Airport. When she hurriedly asked the driver, the person was Saki's younger sister Satomi (Kotone Furukawa). Satomi and Saki have been dragging a feud with her mother and haven't returned to Kofu's parents' home for nearly 10 years. However, because her mother is in a critical condition, Satomi has taken a hard-line approach. Saki manages to get to the airport while contacting her company, and Satomi runs her car while controlling it. The dispute over her work and family heats up in a taxi on the highway where she can't get off.