In a not too distant future, Tokyo was reconstructed under the theme of city sharing to manage traffic congestion and verticalization caused by population growth. People share urban spaces by transforming roads and city structures according to time of day. A woman named Nico is walking in the city on her day off but feels unsure about what to do and whom to hang out with. She hopes for an exciting event to occur. Suddenly, a truck passes before her eyes that reminds Nico of the car everyone's talking about online. She runs after it and encounters Gatsu and Makito. They invite her to join them in their latest A-Class as they chase after the rapidly changing city form.