In order to regain her mother's relics, the bright and tenacious Ruan Li turned into a "bait" to get closer to the time, vowing to make him fall within half a month. But she doesn't know that this carefully designed love trap is actually a secret love layout that lasts for twenty years - he is the real "mysterious man" behind the scenes, willing to pretend to be prey, just to bring her back to the light after being stuck in the quagmire. When the road of revenge encounters long-planned love, who is whose prey? A sister-brother love with two-way redemption and ultimate sweetness begins.