A team of animal heroes with special skills and speedy vehicles work together to keep Big Tree City safe and solve the town's trickiest problems.

In the Ariahan village, on her 15th birthday, Tiala receives a red jewel from the elder Yogi. The jewel is the key to awaken the Great Dragon, whose blood grants eternal life. Due to this, the demon Baramos kidnaps Tiala. His childhood friend, Abel tries unsuccessfully to save her. He is given a blue jewel, the counterpart of the jewel that Tiala received, that can seal the Great Dragon and embarks on a mission to rescue Tiala.

The Road Rovers are a team of five super-powered crime-fighting anthropomorphic dogs known as "cano-sapiens". Their leader is Hunter, a golden retriever mix from the United States. The Rovers' boss is a scientist known as The Master who oversees their operations and supplies them with equipment from their subterranean headquarters.

The story is set in the galaxy located near the center of the universe.

There are Planet Aernia (a planet for Heroes) and Planet Orbs (a planet for robots), governed by Orbiton, in this same galaxy.

Various countries are present in Planet Aernia; they are, Volculm (volcanic country of fire), Zylan (oceanic country of water), Elvan (green-rich country of forest), and Aleum (celestial country of clouds).

Antania, is a nucleus of all the present countries. It has an academy that fosters Heroes.

Under the reign of the Governor General, Antania upholds a national policy to train Heroes to prevent Planet Aernia to be infringed by the Dark Desire.

Heroes are not only the reliable source of battle who have special abilities to freely use the battle discs, but also a symbol of unfailing justice.

cross thousands of years, a terracotta warrior comes back to life! With a girl who looks exactly like his sister-in-law, they fight cirmes and become heroes to bring back justice!