It follows a group of vibrant teenagers in the early 1990s in Fucheng, a small coastal town in Southeast China. They passionately chase after their youth on the era's train, experiencing uninhibited growth and seeking an extraordinary transformation. In this radiant period of youth, they strive towards a brilliant era of personal growth and love.

When the Xu family empire in Harbor City begins to collapse under a series of devastating setbacks, heiress Xu Wanxin is left with nowhere to turn. After being betrayed by her fiancé’s family, she forms a contract marriage with Shen Gu, a brilliant tech prodigy. As they join forces to fend off a hostile foreign takeover and expose the schemes of Shen Gu’s own family, the two grow closer while protecting the Xu legacy.

After being betrayed by her husband, Su Buxiao, and losing her entire family, Mi Youchu is reborn with a thirst for revenge. She dedicates herself to martial arts, determined to kill Su Buxiao—unaware that he’s now inhabited by a game player tasked with winning her love. In a twist of fate, the two become unlikely allies in a life-or-death journey to protect her family from a mysterious enemy, leading to an unexpected bond as they uncover dark secrets and find happiness together.