Genki is a boy who loves playing the Monster Rancher games and one day he's somehow transported into the world of the video game where he meets the girl Holly and the monsters Mochi, Suezo, Golem, Tiger and Hare. Together, they are searching for a way to revive the Phoenix, which is the only monster capable of stopping the evil Moo.
The Searchers, aided by the Pirate Dragons, infiltrate Moo's castle. Moo tells of how he left the village and was infused with Holly's father. He also gives Holly his dagger, which was Holly's father's, to prove it. Then Genki and his friends save her, with the help of Pixie.
The Searchers arrive to the ocean, and encounter Horn, the self-proclaimed righteous pirate. They try to get him to give them a ride across the ocean, and fight Gali's Zuum troops at the same time.
On the high seas, the team is attacked by Moo's Zillas and their leader, Gooji. Unless Golem can overcome his fear of the water, this may be the end for Holly!
After trying a shortcut, the team becomes trapped in a mysterious underground cave. Will they be able to find their way out when Moo's sinister Joker and the Evil Hares are there to wreak magic havoc?
The Searchers discover an ancient city, perfectly preserved by Hengers. But, the robot caretakers are programmed to prevent anyone from entering it! When the Hengers take Holly's pendant, Genki and his friends must trust a malfunctioning Henger, who was banished from the city because of his free will, to find a way inside.
Suezo has always been happy to let others do the fighting for him. But, his friends have begun to take him for granted, and when Hare points out that he has no Special Attack, Suezo takes the criticism pretty hard. Genki begins to try and train him, but does Suezo have the courage it takes to show what he can really do?
