An Unexpected Upgrade

An Unexpected Upgrade

After discovering her fiancé Christopher Lu's long-term affair with her pregnant stepsister Yvonne Ji, Yuna Ji ends the engagement and enters a strategic marriage with Sebastian Shen, a man secretly feigning disability while lying low. Bound by a mutual pact, the two protect each other as Yuna exposes Yvonne's schemes and Sebastian eventually reveals his secret to save her, allowing genuine feelings to develop between them. Yvonne is ultimately arrested, Christopher is left alone with his regrets, and Yuna and Sebastian find happiness together.