Android 20 grabs Piccolo from behind in order to steal his energy so he can defeat the Z fighters, but Gohan comes to Piccolo's rescue just in time. After eating a Senzu Bean to restore the energy Android 20 stole, Piccolo begins to fight with the Android. Meanwhile, Trunks has returned to the past and has discovered something different about these Androids- he's never seen them before! So where are the Androids he warned Goku about?