Caroline Gruner sees her life fall apart after losing both of her parents in a murder followed by suicide. Carrying a congenital heart disease called myocarditis, she needs to learn how to live again, but this time, on her own.

A phone call offers an unexpected option, when a lawyer reveals that a great-aunt has left her as sole heir of a manor. However, this stroke of luck seems to come with a side of mysteries and unanswered questions.