In the year 2039-2040, the megacity of Megalo, built on the ruins of Tokyo, is home to advanced android workers known as Boomers, designed to perform various tasks. But when some Boomers turn rogue, the AD Police struggle to contain the situation. Meanwhile, a group of anonymous vigilantes, the Knight Sabers, consistently outwit the police, inspiring a young office worker named Lina Yamazaki to uncover their identities and join their cause.

Bubblegum Crisis: Tokyo 2040
The series is set in Megalo City from 2039-2040, where android workers, manufactured by Genom Corporation, have replaced human labor.