Lin Mo, the sixth prince who was born in Wei Dynasty, has been neglected in the palace since he was a child. By chance, he accidentally looked at the princess, and was convicted and imprisoned in the sky prison. Soon Beimang dispatched 200,000 troops and marched south. In just seven days, they approached the capital. The situation was extremely critical. Emperor Qing'an Lin Yuan planned to flee south. Before leaving, he passed the throne to Lin Mo and asked him to stay behind to resist the enemy. In a desperate situation, Lin Mo accidentally awakened the strongest family tree system. With the heavy responsibility of his family and country, he decided to rely on the power of the system to fight and embark on the road of protecting his family and country.