

Cold-hearted CEO Karen of Hayes Group is trapped in brutal internal family power struggles. Convinced that the gentle Shana is a pawn planted by her stepfather Leon, she spends one turbulent night with Shana out of suspicion and caution, leaving money afterwards to treat their encounter as a transaction. Shana refuses to take a single cent. Born into a reclusive wealthy family, she has had a crush on Karen since her youth and approaches her purely out of long-held secret love. Plagued by doubt, Karen keeps testing Shana, yet against her better judgment, she keeps making exceptions and falling for her.Leon and his daughter scheme relentlessly to seize corporate power and close in on Karen step by step. After layers of misunderstandings are finally cleared up, Karen realizes Shana's selfless true affection. She dismantles her stepfather's power-grabbing plot, lets down her defenses, and embraces this years-long secret crush. The two find mutual love and stay together.

Kang Do-hyun chooses an ordinary life as a taxi driver to avoid inheriting his father’s family business. One day, he happens to rescue Cha Eun-seol, who is fleeing a chase and has accidentally taken the wrong medication. After a one-night encounter, they part ways and return to their separate lives. Four years later, a stylish CEO shows up with a child and proposes marriage to Do-hyun. After registering their marriage, Eun-seol faces pressure from her parents to abandon the child, but Do-hyun appears and protects both mother and daughter. As her company falls into crisis, Eun-seol attends a family banquet of Taegang Group—the most powerful conglomerate in Country A—to secure a 10-billion-won investment, unaware that the chairman is actually her husband’s father. At the banquet, despite pressure from her former fiancé Gu Jung-tae, Do-hyun’s father protects his granddaughter Kang Rumi and makes his presence known, yet he can only approach her as a “grandfather” without revealing his true identity. As time passes, Do-hyun and Eun-seol grow closer. However, after failing to secure investment, Eun-seol risks both her company and her board position by making a dangerous bet with her father, Cha Myung-hwan. At this critical moment, Do-hyun seeks out his father, accepts the responsibility of becoming the heir, and begins to take action himself. In the end, at a press conference, the capital and influence Do-hyun has prepared turn the situation around. Eun-seol not only saves her company but also secures full ownership, achieving both love and success.