Gu Yeshen, a turbulent CEO in the business world, is cold-tempered and suspicious, and firmly believes that control is the truth. No one has ever been able to mess up the game he set without paying the price. In order to cope with family pressure, he needs an absolutely obedient "contract wife" on condition of huge returns and power and protection.
Lin Wei, on the surface, looks like an innocent and weak female college student, but in fact she is a top killer codenamed "Nightingale". She also has a talent for dubbing, and is especially good at imitating male voices. In order to save her loved one, she signed a contract, put on a cowardly mask, and became the obedient canary in his cage. During the day, she is a sweet-voiced contract lover who depends on him for survival, satisfying his strong desire for possession and control; at night, she is a calm, ruthless and skilled night walker, performing dangerous tasks that quietly intersect with his world.
She relies on her perfect falsetto and acting skills to juggle between dual identities and regards him as the most dangerous target that must be conquered. Gu Yechen gradually became addicted to her softness and dependence, but he keenly caught the flash of cold eyes and those unreasonable subtle flaws. Suspicion drove him closer and closer, examining every inch of her disguise like a hunter. And she was walking on thin ice under his dangerous temptations, repeatedly relying on her quick wit and acting skills to survive.
Until a fatal assassination against Gu Yeshen nearly destroyed Lin Wei's identity, and the truth was suddenly torn apart. The two faced a crisis that was far more complicated than love and hate...
In the end, can she escape her fate and return to the peaceful countryside she longs for? And after knowing everything, will he choose destruction or return to freedom? This dangerous game that started with a contract has long been destined to have no winner.
