Yan Yu, in the twist of fate of rebirth, is determined to break free from the shackles of domestic violence in his previous life. She was once weak and helpless, but faced endless beatings, scolding and humiliation from her demonic ex-husband Zhao Yu. After being reborn, Yan Yu was no longer silent and resolutely embarked on the road of boxing.
In the boxing club, she started from the basics. Under the strict instruction of coach Chen Feng, she endured the hardships of training and continued to break through herself. From feeling powerless when punching, to mastering the essentials of combination punches, to overcoming fear and counterattacking opponents in simulated actual combat, Yan Yu gradually transformed.
However, her changes aroused Zhao Yu's suspicion. When Zhao Yu discovered the secret of her boxing learning, a bigger storm quietly came. Can Yan Yu rely on the power of boxing to completely get rid of the shadow of domestic violence and protect his new life? In this battle of wits and courage with her ex-husband, boxing became her most solid backing, and her fate was completely rewritten amidst the heavy blows of boxing.