The Final Battle
The gang meets up with Niton, a snail-like creature who is a merchant. He sells them second-rate quality items and a fake mystery disc for Holly's dagger. Infuriated, they go to find him, but the Jells trap them on the beach and bury them. But the tide is coming in fast. Holly begs Niton to help, and he finally comes to his senses and does what is right. He digs them out and gives them a refund.
Aired 30/09/2000EP 25 - The Final Battle

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)