In the previous life, Su Nan and his arch-rival Gu Bei were both injured due to business competition, which ended in regret. After her rebirth, in order to save her family from crisis, she chose to have a flash marriage with Gu Bei, planning to have a battle of wits and courage after the marriage. Unexpectedly, Gu Bei could not only hear her voice, but also carry the memories of her past life, and he has been secretly in love with her for many years. This is the beginning of a sweet "war" that is both ironic and ridiculous, involving marriage first and love later, and running in both directions.