4x7 - Dragon Ball Z: Dragon Box

While Vegeta wishes to do battle with No. 17 and No. 18, Trunks attempts to talk him out of it in order to prevent them from being reactivated. Meanwhile, Piccolo, Kuririn, and Tenshinhan have split up to search for Doctor Gero's laboratory. However, Doctor Gero is one step ahead of them and arrives at the lab first, where he awakens No. 17 and No. 18!