SSSS.DYNAZENON - S01

One day after school, first-year high school student Yomogi Asanaka finds a starving man under a bridge. The strange drifter introduces himself as Gauma and tells Yomogi he is a "kaiju user," someone who deals with the "kaiju," monsters that harm the city and its citizens. The next evening, Yomogi runs into Gauma and his classmate Yume Minami. At the same time, a kaiju appears in a populated part of the city. Because Gauma lacks experience controlling kaiju, he takes a mysterious object from a glowing pouch and summons a giant robot called Dynazenon. The mecha needs four people to work together, so it pulls Gauma, Yomogi, Minami, and Koyomi Yamanaka, an unemployed man wandering the street, into its cockpit. Their encounter with the kaiju marks the start of their involvement with kaiju eugenicists, kaiju users who manipulate kaiju with ill intent, and their efforts to bring out Dynazenon's full potential.