Hae Ra wakes after three lost years and finds a world that has moved on without her. Convinced she is Cha Hong Du, she rushes to protect Um Tae Bong, only to discover the star has no memory of her and wants his missing ring back. As fragments of the past collide with Tae Bong's guarded secret, the truth behind Hae Ra's missing years draws dangerously close.

Targeted by a mysterious stalker, actor Um Tae Bong hires the spirited Cha Hong Du as his undercover bodyguard. As she grows closer to Han Jung Woo, Cha Hong Du spots the man she believes is her late father and plunges into danger. Desperate for answers, she pulls Um Tae Bong into a bizarre world where truth and deception collide.

Hong Du's search for answers about her father leaves her wondering if he could still be alive. Tae Bong discovers that Hong Du truly believes she is the heroine of his old drama and pushes her away, only to realise he cannot stop worrying about her. Just as he brings her back into his life, Hong Du comes face-to-face with a man she is certain is her long-lost father.

Cha Hong Du races through Seoul convinced that Choi Gu is the father she believes she lost, only to face the painful gaps in his memory. As Reporter Yeo Mi Ran closes in on Um Tae Bong’s secret, Tae Bong makes a reckless choice to shield Hong Du, putting his career on the line and pulling them both toward a truth neither can control.

With danger still hanging over Tae Bong, doubts about Hong Du's ability to protect him force a new distance between them. But when Han Jung Woo grows closer to Hong Du, Tae Bong's irritation becomes impossible to hide. The more he pushes her away, the harder it becomes to deny what is pulling him back.