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.
As Miyuki and Natsumi get settled back at Bokuto Station, they have to deal with Randy, a billionaire’s 12-year old son who has been pursued by the Yakuza.
Bokuto station gets excited after Detective Tokuno brings over some taiyaki from a popular shop. But the shop is having trouble as someone has been moving cars off the road and stacking them against the wall.
While on routine traffic duty, Aoi and Yoriko spot a girl looking for something in the bushes, but when they are on the way back, they realize they have a big iguana in the back seat! The girl happens to be the owner of the lizard; Miyuki and Natsumi escort the girl back to her apartment which is full of reptiles. One of them, named Shou-kun, is a large snake which takes a liking to Miyuki, and hijinks arise when the duo returns to Bokuto, and the girl finds out Shou-kun has gone missing!
A string of car break-ins has been going on at different public parking lots, and the Chief of Bakuto Station puts everyone on alert. But this time the guy who has been responsible finds a baby that was neglectfully locked in a car. The mom goes into a panic when she comes back and finds her car broken into and the baby missing.
A police officer comes out of retirement to help out with things in Bokuto Station. Apparently the officer knows Aoi from some previous officer work, and since Aoi is still cross-dressing as a woman, the officer tries to turn Aoi into a man by giving him and the entire department some special training. Aoi doesn’t want to change his ways, but he and Natsumi stick with the training.
A taxi cab has been taking advantage of women who have gotten drunk and needed rides home by driving them away from the district and robbing them. Bokuto station has taxi inspections, but are unable to find the culprit. Miyuki uses her detective knowledge to guess a lead on the taxi’s next hit, and Natsumi decides to get drunk as her tactic.
Miyuki and Natsumi realize in all these years, they know very little about their chief’s personal life when they receive a visit from someone that could be his daughter.
Yoriko has been feeling a bit down over her singleness and getting set up on dates by her mom to guys she could care less about. While Miyuki and Natsumi get assigned on a burglary case, Yoriko and Aoi get to give a class presentation on traffic safety to some kids who also discover she is single and make fun of her. She finds a fortune-teller who is somehow able to recognize her problems, but learns soon afterwards of that woman's fate and questions what to do next.
Bokuto Station receives a visit from a research company who is hoping to facilitate the police officer's tasks with some of their latest and greatest robots. They have Miyuki demonstrate manipulating a large robot that could be used for disaster rescues, and Natsumi gets to dress up in a body suit that boosts her muscular power. The robots are demonstrated at a convention but something goes wrong when someone named Doctor Suu shuts them down and brings in another robot.
Ken watches a popular Korean TV drama and gets inspired to write a love letter confession to Miyuki, but has a really hard time finding the right circumstance to do so.
Detective Tokuno of the Criminal Affairs division visits the Chief for a friendly game of Go. Although the Chief always loses, Natsumi decides maybe there is a way for the Chief to win this time and rallies the Traffic department to challenge the Criminal Affairs division to a friendly game of baseball. While the teams play, Tokuno and Chief have their own Go battle again. But where there's baseball, there is bound to be the vigilante hero, Strike-Man!
Illegal garbage dumping hits the Bokuto district. Miyuki and Natsumi help Yoriko and Aoi investigate an abandoned recycling plant that has been overrun with trash, but Yoriko and Aoi have heard rumors that it is haunted.
A white sedan knocks over a woman and her dog. The woman is unconscious but the dog manages to grab a bite out of the suspect's clothing. Miyuki and Natsumi find the dog at the crime scene. Meanwhile, Detective Tokuno reports that a bank has been robbed. Miyuki and Natsumi take the dog with them and find the white sedan that was involved in the hit and run, converging with Tokuno's group. However, the suspects have fled into a large costume parade nearby, so it'll take some animal instinct to figure out who are the culprits.
A film group wants to chronicle the daily life of a Bokuto Traffic department. After following the girls, the Chief, and Ken around, they conclude that the footage is rather droll and routine, so the director comes up with a plan. Miyuki and Natsumi are to be in the final scene, but while they pose, they spot a man on a rooftop about to jump.
Chief informs the gang of a possible bomb threat at the Riverside Mall. The bomb is set to go off during a major shopping event that involves families and kids. Miyuki, Natsumi, Yoriko, and Aoi are assigned to search for the bomb, but they must wear mascot costumes and blend in with the festivities. Miyuki gets to wear the Mushroom costume, and she befriends a five-year-old boy and his younger brother. The younger brother makes off with a car model from a raffle but the older one tells him to return it since it's stealing but they freak out when Nakajima arrives at the scene. Will they find the bomb in time, and what will the boys do?
Natsumi catches a cold and has to stay home to recover. The illness gives Natsumi some really wild dreams including going to a fancy restaurant but realizing they are out of food, and confronting her old nemesis, Strike-Man. Meanwhile, Miyuki and the Bokuto gang search for a Spiderman like guy who has been breaking into apartments.
The Bokuto girls (including Aoi) go on a beach trip for their day off. They also meet up with Saori who is stationed in the North side. Nakajima tries to visit the beach to work on his relationship with Miyuki, or at least see her in a swimsuit, but he gets stuck in traffic. After some volleyball and fun in the water, the girls learn from a beach vendor that some peeping tom has been taking pictures and posting them on the Internet, so the girls help Saori scout for culprits, and set up Miyuki, Natsumi, and even Aoi-chan as bait.
Miyuki attends a wedding in Okinawa of one of her classmates, and the gang get concerned about whether Miyuki will meet up with one of her first loves. What will Nakajima do?
