Quick recap
The Red Ribbon Army returns under Magenta, who recruits Dr. Hedo, Dr. Gero's grandson. By lying that Goku and his friends are evil aliens, they convince Hedo to build the androids Gamma 1 and Gamma 2. With Goku and Vegeta training far away, Piccolo is attacked, fakes his death and uncovers the plan. He asks Shenron for more power and uses little Pan as bait to pull Gohan away from his studies. Gohan fights the Gammas, who realize they've been fooled. Magenta then activates Cell Max, a giant, uncontrollable monster. Gamma 2 sacrifices himself, Piccolo gains an orange form, and Gohan awakens his Beast form and destroys Cell Max.

