In the continent of Opirus, where dragons and knights coexist, young farmer Alan Gray accidentally forms a contract with the young dragon princess Silla, and is involved in a thousand-year-old dragon dispute. Along the way, he gained the power of friendship, love and growth, fought against the forces of darkness with his close partners, and experienced the transformation from a trainee to a legendary knight. Underneath the seemingly humorous journey, there is hidden the suffering of their own growth and choices. In the end, they revealed the truth about the turmoil in the six realms. Friendship and faith allowed everyone to resolve misunderstandings, defeat evil, and let dragons and humans dance together in the sky again.