Inside Granny Snail there is a biological war between two bacterial kingdoms, the Black Ox and the White Ox. In order to save their friend, Pleasant Goat and his friends shrink themselves and enter the body of Granny Snail. They are enlisted to join the White Ox army to fight against the Black Ox army, which to their surprise is led by their enemy Grey Wolf. At the same time, the Cattle Kingdom is working on a plan to attack its two rivals. The goats must use their wits and bravery to stop the chaos and save the microcosm.