G-Force (Gatchaman) follows the adventures of five young heros: Eagle Ken (Washio), Swan Jun, Swallow Jinpei, and Owl Ryu (Nakanishi). The team takes its instructions from Dr. Kozaburo Nambu, director of the International Science Organization. Together, They fight the forces of Galactor, headed by the alien being, Sosai (often translated as "Overload") X and his various commanders: Berg Katse (Gatchaman l), Gel Sadra (Gatchaman ll), and Count Egobossler (Gatchaman F).