After learning of possible Nighlok activity on an island called Monalua, the Rangers travel to investigate. Upon arriving they split up into three groups. Emily and Kevin encounter a young boy who tells them of an ash, seemingly coming from a nearby volcano, is causing the villagers to become extremely paranoid. Meanwhile, Master Xandred, Octoroo, and the Nighlok Malden test out their new Master Blaster inventions to be used on the Rangers. After warning the others via their Samuraizers, they attempt to regroup to form a plan but are ambushed by Dayu. Elsewhere, Serrator ambushes Mike and Antonio, and taunts them over the fact that they’re still using swords and Deker attacks Jayden and Mia, noting that Jayden has become weaker upon relying on his teammates in battle rather than fighting solo. This distracts him and allows Deker to injure him until Mia takes him out of the battle and into safety. Meanwhile at the Sanzu River the Nighlok Maldan demonstrates his newly developed laser blaster weapon to Master Xandred, with Maldan’s Mooger Squad using the weapon for target practice. Still enraged by Deker’s words, Jayden runs off to fight Deker, again, with Mia in tow. They arrive at a mountain guarded by Dayu and Deker that is producing the ash infecting the village. Mia fights Dayu as Pink Ranger, as the other Rangers arrive. Just then, Maldan appears with his Mooger Blaster Squad. The Rangers use their speed to get close enough the Moogers to take them out until Antonio gets gunned down by the Mooger’s reinforcements who overwhelm the rest of the team. At the last second, Mentor Ji arrives with the Bullzooka (a gift from Cody) and utilizing the Bullzooka, Jayden destroys Maldan and his mooger squad. When Maldan revives the others hold him off while Jayden destroys the source of the ash and thus breaking Serrator’s hold on the island. Serrator then takes Dayu and Deker away, leaving a Papyrox and a pair of Spitfangs to keep the Rangers at bay. Then the Rangers forms Claw Armor Megazord to destroy the spitfangs and eventually needing to use Samurai Gigazord to destroy the Papyrox. Having freed the island the Rangers head back home.