All four episodes of the Japanese anime series. While attempting to access a military server, Souma Toru and his fellow hackers, known as Steppen Wolf, realise they've fallen into a trap to catch terrorists. With their leader killed, Souma has no option but to join the ranks of 'Flak', a military organisation that guards secret data within the servers. Now working on the inside, Souma tries to find out who was responsible for his leader's death.