On their way to Mossdeep, Ash and Co. stop on a beach and they see a diver coming on the beach with a box.The man goes up to them and show them a necklace made of Green Shards.He said he found it on a Relicanth so he brings them to his shop and say he's going to looks for the treasure of a sunken ship.Ash and Co. agree to go with him and they go in a sub. Meanwhile in their Magikarp Sub,Team Rocket sees all the Relicanth underwater so the plan to steal all the Relicanth and the treasure so they can give it to Giovanni. (thetvdb.com)