With only a handful of vampires left in the world, their leader plans to spend his final years peacefully creating a flower named after his clan. But those plans fall apart when a charming human trespasses into his secluded space. Instead of leaving, the human somehow turns his life upside down with an unexpectedly successful flower shop, busy sales, and even a pop-up store. As their unlikely relationship deepens, the vampire finds himself learning far more than he ever expected.