Jay, the protagonist, begins experiencing the donor’s memories and habits after undergoing a heart transplant. By chance, he crosses paths with Arthur, the donor’s ex and a member of a criminal organization, and gets dragged into the underworld. To make it back home, Jay must recall the location of something Owen—the heart donor—had stashed away... Constant interference from rival gangs and a whirlwind of chaotic events ensue. As they fight through crises together, Jay and Arthur slowly grow closer. But can the two of them really return to their normal lives unscathed?