Nido is a curvy teenager and a bullied bookworm with no friends when she encounters the secret Order of Gatekeepers. She consequently has to follow a harsh training program to become a Gatekeeper herself. She has to fight in order to survive relentless trials under the tyrannical guidance of her instructor. A prisoner of the Order and captivated by a first-love romance, Nido gets entangled in a mysterious society where the borders of the universe seem to blur and gates have to be kept shut - in a world where keys are mightier than weapons. In a Dark Academia setting, Oli Veyn transports you to new, undiscovered worlds.