Ep 28. The Thief That Keeps on Thieving!

As Ash and friends continue their journey through Sinnoh, they encounter a sly and elusive thief known as the Phantom. This master thief has the ability to steal anything he desires and leave no trace behind. When the group discovers that the Phantom has set his sights on stealing the valuable jewel, the Adamant Orb, they decide to jump into action and stop him.

Ash and his Pokemon work together to keep the Adamant Orb safe, but the Phantom proves to be a difficult opponent. With his vast knowledge of technology and his sneaky tactics, he manages to constantly stay one step ahead of Ash and his friends. Just when they think they've caught him, he slips away yet again.

As the group continues their pursuit, they discover that the Phantom may not be working alone. They encounter a young girl named Marble who appears to be connected to the thief in some way. Marble is a skilled Pokemon Trainer who has a close bond with her partner Pokemon, a Sneasel. Despite her impressive abilities, she seems to be in cahoots with the Phantom and is helping him in his thieving endeavors.

Determined to unravel the mystery of the Phantom and Marble's partnership, Ash and friends devise a plan. They split up, with Ash and Pikachu guarding the Adamant Orb while Dawn, Brock, and their Pokemon try to track down Marble and uncover more information.

Meanwhile, the Phantom continues his thieving spree and sets his sights on a rare and powerful Pokemon known as a Regigigas. With the help of his many technological gadgets, he manages to successfully steal the Regigigas and makes his escape.

As the group rejoins and reflects on their thwarted efforts, Marble appears and finally reveals her side of the story. She explains that she was once a member of the Phantom's crew but had a change of heart when she realized the harm they were causing. She has been attempting to sabotage him from within, but it has proven difficult.

Determined to make things right, Marble teams up with Ash and friends to get the Regigigas back and put an end to the Phantom's thievery once and for all. They devise a plan to infiltrate the Phantom's hideout and retrieve the Pokemon. With Marble's help, they're able to successfully infiltrate and defeat the Phantom.

In the end, the group is able to return the stolen Regigigas to its rightful place and bring the Phantom to justice. Marble is able to leave her past behind and start anew, and Ash and his friends continue on their journey with newfound friends and allies.