Goten is more focused on his date with Valese than training. Their outing is interrupted when Baby, moving through various bodies, begins wreaking havoc in the city to draw out the Saiyans.
While Goku, Trunks, and Pan continue their search for the Dragon Balls in space, the "Machine Mutant" Baby arrives on Earth to find a powerful host. Dragon Ball GT Episode 25
Goten is forced to leave Valese to confront the mysterious attacker. Baby reveals his true nature and intense power, baiting Goten into a fight to judge his strength. Goten is more focused on his date with Valese than training