A Stealthy Challenge!

While heading to Coumarine City, Ash & co. meet up with their old friend Sanpei, saving him after an injury during training. They learn that Sanpei was attacked by a masked ninja when on a mission to deliver a scroll to a mansion. Deciding to help, Ash & Co. join Sanpei on his mission, but soon the masked ninja appears and challenges them for a battle. During the battle, something happens with Froakie. Will Ash & co. be able to deliver the scroll?