For centuries, vampire heir Brian lived by his father's creed never to drink human blood—until a rival shattered half his heart, and he fell into a human pool, accidentally saved by Yuri's blood.
Yuri is a neglected, heavily bullied high schooler. Initially drawn only to Yuri's blood, Brian grows intensely possessive and jealous of Lucius, a loyal werewolf who has long been Yuri's sole comfort. But as they grow closer, Brian falls deeply in love with the kind, fragile boy.
Hunted by the villain Aiden over a "pure blood" secret, Yuri cuts his wrists to save a dying Brian, sealing a blood pact that fully revives Brian and cures his sunlight vulnerability. Hiding in a secure castle, their romance blooms, but the pact makes Brian dangerously addicted to Yuri's blood, terrified of losing control. When Aiden tricks Lucius into believing Yuri is just a "living blood bag," Lucius launches a "wolf rescue." To protect him, Brian pushes Yuri away with cruel words. Heartbroken, Yuri returns to the werewolf pack with Lucius.
Devastated by grief, Brian falls into Aiden's trap. Discovering he is the forbidden offspring of vampires and werewolves, Yuri awakens his dual bloodline. He storms the vampire arena to rescue Brian, defeats Aiden when forced to choose between his lovers, and realizes he cannot lose either. The saga culminates in a triumphant, three-way happily-ever-after wedding.