Legend Cup: Mocchi vs. Most
Genki and the group enter Naga's territory, which is also the Color Pandoras' forests. Naga sends Stone Dragon to destroy them. Meanwhile, the group falls into one of the Color Pandora's traps. They eventually understand each other, and work together to trap Stone Dragon. But when Stone Dragon breaks free, Color Pandora then turns him into a Lost Disc...
Aired 16/09/2000EP 23 - Legend Cup: Mocchi vs. Most

2000
Monster Rancher (2000)
Genki is a boy who loves playing video games. One day he's zapped into the world of Monster Rancher and meets the girl Holly and the monsters Mochi, Suezo, Golem, Tiger and Hare.
Continuing from where the original story left off, Genki and friends journey to conquer the legend cup in hopes of freeing Holly's father from the mystery disc.
(Source: AniDB)