Overdrive is an action role-playing game with a futuristic style and a side view. In the future, a strong, outstanding species is created from a combination of people, technology and ferrous metal. The government calls them "shadow cyborg" and allows each sector to have its own shadow security force (S.E.F), all of which must be controlled by headquarters in Century City. Everything seems so perfect until the day the headquarters is attacked by the Dark Clan. Hacked, Lord Commander S.E.F kills his soldier and replaces him with a new generation of shadow cyborgs to take over the government. CORE, a senior cyborg soldier discovers the plot too late. After the attack, he joins the rebel and heads into the city to avenge his comrades and destroy the Dark Clan.