Hu Keqing was forced to sacrifice his life to make peace but was framed by the family. Ding Chengran sneaked into the enemy country in the name of "self-denial" and vowed to reveal the truth. From calculation to alliance, from misunderstanding to heartbreak, the two exchanged their lives time and time again on the frontier of the national war. Sweet pets are not weak, revenge is not lukewarm, and the battle becomes sweeter as it burns.