Huang Yu Xian lost her boyfriend from a plane incident two years ago. She misses him a lot and sends messages with no reply. Meanwhile, her colleague claims there is an app that can find someone who looks identical to you.

Huang Yu Xuan is shocked to find out that her boyfriend was planning to propose to her. Meanwhile, through Ah Tuo's app, she finds a photo that has a woman who looks exactly like her and her boyfriend is beside the woman.

In 1998, Chen Yun Ru is unconscious in the hospital after a stranger's attack. Meanwhile, in the present, Huang Yu Xuan falls asleep listening to an old tape and wakes up, becoming Chen Yun Ru.