Roar of the Black Rayquaza Roy challenges Rayquaza to a battle, but Amethio arrives to capture Rayquaza for himself. Rayquaza easily defeats Amethio's Ceruledge and attacks the Rising Volt Tacklers, but Terapagos briefly enters its Terastal Form and protects them before Rayquaza flies away, with Friede and Diana concluding that Rayquaza was testing Terapagos' power. Diana prepares to investigate the Six Heroes and Explorers on her own, asking Friede to keep her departure a secret from Liko. The next day, Diana battles Liko and Roy, restoring their confidence following their disheartening encounter with Rayquaza. Meanwhile, Amethio returns the Explorers' base with the resolve to become stronger.