In ancient China, dragons lived in friendship with humans. Unfortunately, human greed ended this alliance. Years later, little orphan Ping cares for the last pair of trapped dragons. The girl helps her guardian on the palace farm. He also tries to keep out of trouble his unruly friend, the mouse Hua Hua, who constantly interferes with his duties. One day, Ping learns about his true destiny - he must save an extremely valuable dragon egg. The girl, accompanied by an old dragon, sets off on a challenging journey to find magical water. This is the only place where new dragons are born. During this dangerous adventure, Ping will find a way to unleash her power and discover that she is the true Guardian of Dragons.