Lambert, a wandering teenager who is not doing his job, accidentally heard that the evil demons under the big black dragon were preparing to capture the Altria continent. In order to protect his hometown, he was trapped in the battle with the demons, but was rescued by the ranger Barna and joined the team of the rangers Gerant and Algerta (voiced by Jing Tian). Karaqiu (voiced by Xia Zitong), the leader of the elves, also brought Princess Nelvin and the archer follower Leah (voiced by Xu Jiao) to invite the human king to join the war. Facing the invasion of monsters, they formed an alliance with the ranger team and the human knight Bescode (voiced by Hu Ge) to deal with the big black dragon. After going through difficulties, everyone came to the nest of the big black dragon. Lambert and Leah fell in love with each other, but they didn't know that Gerant, Algerta, and Bescode each had an unknown secret... This film is an animated movie adapted from the popular online game "Dragon Nest". It was launched by Shanda Games Company. The plan is to shoot a trilogy. The main line of the story revolves around the prequel of the game "Dragon Nest".