At the engagement party of the Mantel family, Avery Thorne was publicly dumped by her fiancé, Damian Mantel, who chose to be with her stepsister, Seraphina Vance, and even mocked Avery for being unfit to be the Mistress of the Mantel family. No one knew that Avery was the sole heir to the powerful Thorne family. Orson Mantel (Damian's grandfather) initially chose Avery as his granddaughter-in-law to form an alliance between the Mantel and Thorne families. Instead of collapsing, the heartbroken Avery chose to ally with Cassius Mantel, an outcast of the Mantel family and an illegitimate son. The two agreed to support each other in competing for the inheritance of the Mantel Group. Cassius had endured for years and was extremely resourceful, while Avery used the resources and wisdom of the Thorne family to help Cassius gradually gain Orson's attention. Meanwhile, Damian and Seraphina indulged in privilege and greed, embezzling company funds and secretly transferring assets, which were eventually exposed by Avery and Cassius's scheme. In the end, Damian was deprived of his position in the Mantel Group, Seraphina was forced to leave, Cassius officially became the CEO of the Mantel Group, and Avery also revealed her identity. The two transformed from allies into cherished partners, embarking on a new life together.