Upon reaching the shoreline, the group heads straight for the Pokémon Center. There, Ash talks to Professor Oak via videophone and lets him know he recently caught a Lapras. Tracey officially introduces himself to Oak, though the call is cut short as Ash’s Muk smothers the Professor. Ash and his friends walk along the dirt path and see Mikan Gym up ahead. Ash starts to run towards the Gym, though he stops after seeing a coconut on the ground. He runs over to it with Pikachu and picks it up, but a bucket of water falls on their heads, revealing it to be a trap set by a boy named Senta. He chastises Ash and criticizes his Top 16 position in the Indigo Pokémon League. He challenges Ash to a battle, but Cissy, his older sister and the Mikan Gym Leader, intervenes and scolds her younger brother.
(Source: Bulbapedia)
