At first it seemed like an ordinary day in the lives of the Rainbooms, but then they and their new friends boarded that odd train and their lives took a turn for extra weird. And that was before they find out that they have to battle an evil that wants to escape the Digital World and assault the Real World. Well, they've fought evil before. Only real change is the battle cry.

Execute! Spirit Evolution!

((A crossover with Digimon Frontier))