Dragonball Z - Now You See It, Now You Don't!
1 Watch the episode when Kurillin and Trunks look for Dr. Gero's basement.
2 When you see Master Roshi's island, the plane that Chichi saved Goku from the androids is on the island. But when Chichi gives Gohan some snacks while he's outside, it's gone!
Watch the episode when kurillin+trunks look for dr. gero's basement