An ordinary urban girl who has lost part of her memory meets a wealthy, handsome and considerate CEO. From thinking that she has encountered a pig-killing plate to devoting herself wholeheartedly, she resolutely resigns and follows him to live in another city and in a big villa. Dream fairy tale days. One day, she woke up and walked to the mirror and found that there was another face standing inside, and all her identity documents suddenly changed to "her" in the mirror. In this strange city, she could no longer prove her original identity. She discovered a laboratory in the villa, in which experiments related to humans were being conducted... How should she find the truth? And what secrets are hidden behind the truth?