In the not so distant future, to cope with the traffic jams and verticalisation due to the increased population, the city of Tokyo was reconstructed under the theme of city sharing in which people share the urbane space by transforming the roads and city structure with the time of day. Kai Kuniko is walking around aimlessly in the city on her long-awaited day off. However, she does not know what to do and whom to hang out with. She hopes for something unexpectedly exciting to happen. Then, an unusual truck passes right before her eyes. The loud music and flashy decoration of the vehicle remind Kuniko of the car It that everyone is talking about on the internet. Curious, she follows the vehicle, stumbling into Ganaha Koku and Kasuya Makito in their brand new Mercedes-Benz A-Class. Kuniko hops on board and they chase after the truck driving with reckless abandon through the city that is rapidly re-configuring its layout.