You're Under Arrest! (1996) : 3x1

On the airplane flight back to Tokyo, Miyuki meets and befriends a young boy who seems to be traveling alone. Natsumi has been training with the JSDF Rangers and is on her way back to Tokyo as well. But when Miyuki arrives at Tokyo, a man tries to take the boy, and given the boy’s reaction, it looks like abduction. Miyuki gets the boy back, and makes a run for it by car, but the guy pursues in a black sedan representative of the Yakuza mafia.