Dragon Ball GT 3x2

In the depths of HFIL, an evil union between Dr. Gero and Dr. Myuu takes place. Soon after, Trunks is ambushed by Android 17 as a warning to Goku... Come to HFIL or the earth will be attacked! As Goku travels to HFIL to meet an uncertain fate, a fleet of ancient enemies flood the earth on a mad rampage!