In a grand mansion at the heart of the city, Cornell, a loyal servant, has raised the Barnett brothers like his own children. But as they grow older, he finds himself seeing them in a different light. On their twentieth birthday, burdened by these feelings, Cornell decides to leave.

However, just as he says his goodbyes, he suddenly collapses. Upon waking, he discovers his body has changed in an unthinkable way…

“Now, the three of us will be together in this mansion forever.”