By the Deep Sea

Lin You, the descendant of a fallen noble family, spots a sapphire necklace that was part of her mother's dowry at an auction and vows to buy it back. But when its price exceeds her budget, she falls into despair. Just then, Gu Huai, a rising business tycoon, steps in and buys it. Gu Huai and Lin You once shared a youthful romance, but they parted ways because of family opposition and misunderstandings. To get the necklace, Lin You becomes Gu Huai's personal assistant and endures one difficult task after another. Yet during a business negotiation, she uses her connections to secure a deal, and their relationship begins to thaw. When the three-month term is up, the necklace disappears. Just as Lin You is overcome with despair, a mysterious package arrives with an unfinished letter. Later, Lin You learns that Gu Huai's family business has become embroiled in a commercial conspiracy. Together with her friend Su Ran, she investigates and discovers that a secret organization is connected to her family's downfall years ago. Their operation falls into a trap, but Gu Huai arrives just in time to save them. On the eve of victory, the secret organization releases a video showing that Gu Huai's father once helped frame Lin You's family. Their relationship hits another impasse, and the road ahead seems uncertain.