Amid the turmoil of a chaotic era, Li Xuan is conscripted into the army and forced to say goodbye to his wife and child. At a critical moment, he unexpectedly awakens a mysterious system. Relying on his archery skills, he repeatedly earns military honors, rising from an ordinary soldier to a commanding general. After defending Taiyuan and rescuing troops in Que Shu Valley, he rushes to Luoyang to stabilize a desperate battlefield. Just as his reputation begins to soar, a sealed case from many years ago suddenly resurfaces, revealing a shocking secret about Li Xuan's true origins. This animated drama is adapted from the Tomato Novel 《Sui and Tang: Reborn at the End of the Sui Dynasty as a Warlord》 by Xin'an Youtiao.