Bye Bye Psyduck

While taking a break from their travels, Misty's Psyduck is lost. As everyone searches, Misty meets Marina, who finds Psyduck and notices its glowing tail – a sign that it might evolve. Misty accepts Marina's Pokemon challenge and a Psyduck vs. Psyduck battle is suggested. However, Psyduck is again missing. When a Golduck appears and helps Misty win, they think that it's her evolved Psyduck, until they find Misty's Pokemon sleeping!