Within the captivating allure of Riverfield, a town embraced by the mystic ocean, stands the prestigious Decelis Academy, a haven veiled in enigma. Here, seven boys (the 7 sons: Heli, Jaan, Jino, Solon, Shion, Jakah, Noa) harbor a clandestine truth – beneath their guise as players of the renowned Nightball, they are, in fact, vampires entwined in a secretive pact.

Striving for normalcy, these nocturnal beings, haunted by a shadowy past, disguise themselves as ordinary students, save for the sporadic clashes with a rival Nightball team composed of werewolves. Yet, their unspoken bond weathers these challenges until a mysterious transfer student, bearing an uncanny strength, unravels the threads of their forgotten history.

In the hallowed halls of Decelis Academy, where shadows harbor more than mere secrets, the once-unbreakable unity faces an unforeseen trial. Will the revelation draw them closer or lead them into the abyss of darkness? Amidst the cryptic tapestry of Riverfield's secrets, the destiny of these nocturnal souls unfolds, awaiting discovery in the moonlit dance upon the waves.