Ep 8. Mr. Moon / What's Wrong with Dan

In Bakugan: Battle Planet season 1 episode 8 titled "Mr. Moon / What's Wrong with Dan," the gang is excited to attend a concert by their favorite musician, Mr. Moon. However, their excitement is dampened when they discover that their Bakugan are disappearing. It turns out that Mr. Moon is actually a Bakugan thief who has been stealing them from all over the city.

In an effort to stop Mr. Moon, the gang splits up to search for clues. Dan, who has been acting weirdly lately, is left behind to guard their remaining Bakugan. However, he seems to be more interested in taking a nap than protecting their Bakugan, leaving the rest of the gang to question his behavior.

As they search for Mr. Moon, the gang encounters a group of Bakugan brawlers who are also searching for the thief. The brawlers challenge the gang to a battle, but they are interrupted by the appearance of Mr. Moon himself. Using a special device, Mr. Moon absorbs the Bakugan into it, leaving the gang to devise a plan to stop him.

Meanwhile, Dan is still acting strange, and the gang begins to suspect that something is wrong with him. They try to talk to him, but he remains unresponsive. With their Bakugan in danger, they decide to try to snap Dan out of it by challenging him to a battle. However, Dan's behavior only becomes more erratic as the battle goes on.

Eventually, the gang comes up with a plan to stop Mr. Moon. They lure him into a trap, and with the help of their Bakugan, they manage to defeat him. All the stolen Bakugan are returned to their rightful owners, and the gang is left to deal with the aftermath of their battle with Mr. Moon.

As the episode comes to a close, the gang finally confronts Dan about his behavior. It turns out that he has been dealing with some personal issues that have been affecting his performance in battle. Through the support of his friends, Dan is able to open up and begin to overcome his problems, setting the stage for future episodes.