Liko and Roy want to learn about Ancient Poké Balls, so Diana suggests they visit her antique dealer friend, Tepen, in case he has information. When they arrive at his market stall, Tepen takes a close look at Roy’s Ancient Poké Ball but then claims to not know anything about it. Liko, Roy, and Friede leave, disappointed but determined to find clues. Later, Roy realizes his Ancient Poké Ball is missing…and Tepen must be the thief! The Rising Volt Tacklers go searching for him, and after a battle, they confront him about his actions. It turns out someone wanted to buy the Ancient Poké Ball from him…but who?