In a village with a centuries‑old tradition of sacrifice, a young girl named Lyra is set up by her fiancé Kane and his lover Cecilia to be offered up to Hades, the god of the underworld. She discovers that for years Cecilia has been using the pretext of curing her own illness to have Kane secretly drain Lyra’s blood—and that they also plotted to kill her sister Irene. Now they’re pulling the same trick again, forcing Lyra to take Cecilia’s place as the sacrifice. After she’s thrown into the River Styx, Hades appears and saves her. It turns out he’s under a curse that can only be broken by true love, and Lyra is the very girl he rescued ten years ago—his destined one. Hades saves Lyra, but she chooses to take revenge on all her betrayers with her own hands.
