In a world of rapid technological advancements, colossal robots known as "Labors" emerge, designed to assist heavy industries. However, this causes an unfortunate upsurge in "Labor crimes," which demands a specialized law enforcement branch that's well-equipped and committed to policing Labors. Izumi Noa, a female cop, joins Special Vehicles Division 2, where she's teamed up with the state-of-the-art "Patrol Labor" named Alphonse, triggering a chain of exciting escapades against deranged construction workers, eco-terrorists, and aquatic creatures.