Lin Xiaoman, a modern operations specialist, accidentally touches an ancient bronze bell while working overtime and transmigrates to ancient times, where she becomes Su Wantang, the Princess Consort of Prince Jing. All she wants is to return to the modern world, but she unexpectedly gets caught up in a storm of trouble and inherits the unresolved injustice and crisis left behind by the original owner of her body. Teaming up with Prince Jing, Xiao Jingheng, she uses her modern business and operations skills to devise strategies and build a business empire. While gathering evidence and investigating an old military-supplies case, she also finds herself confronting feelings that are quietly blossoming between them. With a deadline of ninety-nine days, she must make a difficult choice between solving the injustice and fulfilling the original owner's final wish, or giving up the love that has begun to stir in her heart.