'Answer me if you can hear my voice.' One day, a voice suddenly reaches Na-chan. Drawn by the sound, he arrives at a forest and meets the minicar Evan! Evan, badly injured in a sudden battle. The girl Isobel, who came from another world, saves Evan! Isobel reveals that the evil organization Dark Shadow is committing wicked deeds and asks Chan for help... The mysterious group Dark Shadow, aiming to rule the entire universe! Mecanimals who escaped from them and came to Earth. Let's fight together to stop Dark Shadow's plot! Shall we all shout together? Mecanimal fight!