The series follows the adventures of a young boy named Ray who possesses the rare ability to befriend and duel alongside fantastical creatures from a parallel dimension. Evil forces would have these creatures tamed and enslaved, so Ray and his two best friends Allie and Gabe must join the ranks of the mysterious Duel Masters to ensure the survival of both races before it’s too late.
A new Rookie team has been assigned to complete their training with Stormer and his crew - but someone from Stormer's past is trying to take down the Hero Factory and Stormer himself.