Before everything started, Kaname Mendoza, the very first King of The Vampire Kingdom, and Alondra Kokushima, youngest daughter of the Demon Lord, were lovers. They used to see each other secretly without no one knowing and have sexual affairs. One day Kaname decided to stop the secret relationship because he couldn't cheat on his wife who was queen. A month later they meet again and Alondra tells him that she is pregnant. Kaname didn't know what to do at first but came with a solution to send his wife and sons to the human world and live there for the time being. Alondra tells her older sister that she will be living with her in order to help her take care of the baby. Unexpectedly, Alondra was having triplets and Kaname decided that it was safe if they had different last names and also different names so no one will know what happened. How will the three girls live knowing they are products of a sexual desire. Will it affect them or just one of them?