In a world forever changed by the appearance of an eccentric self-titled god, The Maestro introduced a system he called the orchestra. Turning regular humans into Echoes, beings awakened with powers.  Sinclair Arden mostly known as Sin, was always content being a shadow and living an easy life. However, fate seems to have other plans for him.  Sin was born without a mother, lost his father at a tender age, and gained a  new family in return, a private chef, two twin terrifying bodyguards, and a room in a mansion, but all that is once again lost when he gets selected as an Echo and is forced to move to The Arena where Echoes and monsters reside and he might just to become one himself to survive.