Dragon Ball Kai

The next day, Gohan learns that Chobi, who is the child of Toto the pterodactyl, has been captured by a circus and put on display. In his attempt to rescue Chobi, Gohan is portrayed as a criminal. Videl pursues Gohan as a suspect. When Chobi's parents attack the city in search of their child, Gohan manages to handle the situation and return Chobi to his parents. Videl discovers the truth that Gohan is Great Saiyaman. Videl blackmails Gohan into participating in the 25th World Martial Arts Tournament. As some of the other Z Fighters express interest in the tournament, Goku calls out from the Other World and says he will return to Earth for a single day to participate.