In a world where technology allows for heart transplantation to an extreme level, you play as a skilled detective tasked with solving a series of murders where the hearts of victims are mysteriously returned to their original owners. As you unravel the puzzle, you must navigate through a web of deception, hidden identities, and twisted relationships while making choices that impact the lives of the people involved. With each decision, you draw closer to the truth, but will you save your own heart or lose it in the chaos?