If you like Sword Art Online or Accel World, you will like this too. An online platform game malfunctions and the players are in comas. There is only one way to save them - beat the deathly Phantom ship of Misery Sea. King is a slave but will train to become the ultimate fighter and the best pirate in Black Flag, the new craze in computer games, a game which uses the brain's nerves and synapses to give the most real life experience possible. He needs to immerse himself in this new world to save his best friend Elize, whose real life alter ego Adeline is facing death in hospital. Fulfilling quests and facing challenges that will test his nerve and improve his skills, King will meet new friends and terrifying creatures in his mission to destroy the ghostly Phantom.