Dragon Ball Kai (2014)

Synopsis

After Gohan spreads word of the tournament to the others, as well as managing to convince Chi-Chi to let him participate himself, Gohan takes a leave of absence from school and begins training with Goten. Gohan is surprised to find that Goten not only possesses great strength, but is also already capable of transforming into a Super Saiyan, although he has yet to learn how to fly. Later, Videl comes around to have Gohan make good on his promise to teach her how to fly using buku-jutsu, with Gohan starting her off with the basics of learning how to control her energy. Within a day, Videl has managed to learn how to float while Goten has managed to learn how to fly. Following a remark from Gohan, Videl comes back the next day with her hair cut, determined to learn more from Gohan. Meanwhile, Vegeta is also surprised to find that Trunks is also capable of becoming a Super Saiyan, whose strength is slightly higher than Goten's, while Goku trains fiercely in anticipation for the tournament. (Source: Wikipedia)