After graduating from high school, Mai Kawai's top priority was to find a job with a stable income to avoid turning out like her father. However, despite having taken a variety of civil service exams, she was faced with a harsh reality: nearly every institute denied her entry. The only place that accepted her was a police academy, which she reluctantly joined. Even now that she is an actual police officer, the world continues to be cruel to Mai. Due to her profession, she unexpectedly receives constant criticism from disgruntled citizens. Disheartened by the hostile treatment, she decides to submit a letter of resignation after just a few months of employment. But on the same day Mai chooses to quit, she meets Seiko Fuji—the former ace of the Criminal Affairs Division who is assigned as her new instructor. Finding her new coworker to be enchanting, Mai delays leaving and gives her uninspiring job a second chance. [Written by MAL Rewrite]

Twenty years into the future, a city now called "Tokyo" has developed into one of the few world-class high-tech centers, "Tokyo City." The main character, Ken Kanzaki, is a young investigator assigned to the criminal investigation section of the Metropolital Police. He is one of the finest sharp shooters in the Police.One day, Ken is ordered to provide security for a party held by for "Zaizen Konzern," a world-class plutocracy. All of a sudden, spector robots appear and distrupt the party. Zaizen, a commander-in-chief, is killed and both Ken and Jun. Zaizen's son,are fatally injured by the robots. Two of the party's guests, an auto-racer, Ryo Aguri,and a wresler, Go Goda, also receive serious injuries. Three severely injured young men are operated upon by scientists from the Metropolitan Police. Several days later, a robot corp led by a mysterious organization called "Ido" appears in the floating-town of the Tokyo Bay. But the Police and the Army have no effective strategies to contain them. At that moment, three young men attired in mechanical suits enter. They are the very three young men, Ken, Ryo and Go, who have been turned into the cyborg investigators through the operation. They call themselves "Armored Police Metal Jacks". "Metal Jacks," dazzlingly switching from "Jack Suits" to "Jack Armors," completely demolish the robot corp and achieve victory, thus signals the beginning of the battle between the high-tech criminals and "Metal Jacks" with a futuristic "Tokyo City" in the background.

Having spent time at a juvenile corrections facility, teenage delinquent Saki Asamiya is given a chance to redeem herself and delay her mother's possible death sentence by working as an undercover cop. Armed with nothing but a special yo-yo, Saki's assignment is to return to her high school and investigate on the corruption and mysterious deaths among the students. But in order to find the answers to the condition of her school, she must confront the wealthy and powerful Mizuchi sisters, who moved in and have taken control after her previous expulsion. (Source: ANN)

On a sunny day, Mihoshi Kuramitsu decides to take a peaceful nap while everyone else does chores. Sick of Mihoshi's laziness, Aeka Jurai Masaki questions her capability as a Galaxy Police Officer. Her pride wounded, Mihoshi decides to prove that she is a skilled first class detective by telling the story of how she and her partner, Kiyone Makibi, put a stop to a series of thefts involving Ultra Energy Matter. To make it more fun, Mihoshi inserts Tenchi Masaki and the others into her story. However, her fantastical tale may just demonstrate her lack of a grip on reality rather than showcase her accomplishment as a talented officer. [Written by MAL Rewrite]