In 2319, Galactic Sheriff Aase Swan escapes the destruction of her ship, USF Vigilant, clutching a powerful Time Crystal. Pursued by mad scientist Rainer Kane, who uses its twin to manipulate time, Aase crash-lands onto the USF Nomad, an educational vessel carrying the Circuit Breakers: Isaac, Marie, Niels, and Yunus, guided by teacher Brenda and piloted by Clink, an 8-bit-faced robot.