You are a doorman at your apartment building. Your mission is to identify the Doppelgangers and report them to D.D.D headquarters. While working, you fell in love with a guy. That's Francis, the milkman.

He is a handsome and gentle guy. You two get married and he loves you very much.

One day, you come home and find Francis sitting on the sofa reading a book. But something is a little different with him. You have witnessed many Doppelgangers and are starting to have doubts. Is this Francis a real person? Or just a perfect Doppelganger?

"Darling? Is something wrong?" he asked when he saw you staring at him.