A kidnapping sends twin sisters far from home.
To ease the immense pain of her five sons, their mother hypnotizes them and erases their memories of their little sister. She searches for the girl alone, then disappears.
Years later, an impostor heiress shows up at the door, and the five Gu brothers assume she's a fraud.
Their father reveals the long-buried past.
The police bring good news, and the family goes to bring back their missing daughter, only to fall into a trap and bring home the wrong girl.
Another daughter has had her memories altered. She has always believed her family cruelly abused and abandoned her, and her heart is full of resentment.
Layer by layer, the conspiracies unravel, and the lies are finally exposed.
It turns out their longing never faded. After years of searching, the family is finally waiting to be reunited.
After they find their mother, the fifth Gu brother feels like the sky has fallen: the girl he's grown fond of is actually a blood relative.
