Ash’s class is going on a fishing trip, and Professor Kukui asks Lana to be in charge! Everyone casts their lures, with varying results—Lana befriends one Pokémon after another, but Ash and Mallow can’t get the timing right, Sophocles is too busy collecting data, and Lillie hooks a magnificent Milotic that gets away when she freezes.

When they take a break, all their new Pokémon friends get scooped up in a Team Rocket net—and then find themselves falling toward some rocks! But Lana’s Popplio has been working hard for such an occasion, and it creates a giant water balloon to cushion the fall and save the day!