Zero Sum Game finds our high-flying lesbionic brainiac Sid Rubin and her unlikely posse of friends, grounded, with wings clipped from their live-action-role playing misadventures. To break out of parental jail, Sid, Jimmy, Imani, Ari and Vikram enter a school robotics competition. But just as things get interesting, Vik learns that his super-star status and hard-won trophies from the frantic online game Contagion have been stolen. "Tu n'as pas envie avec mes amis. You do not mess with my friends." Watching Vik fall apart, Sid is determined to track down the trophy thief, no matter how much late-night gaming and sleuthing it takes. Sid and the gang join newcomer Ze to chase ghosts and trawl dungeons in a frantic race against time to save not just Vik's bevy of stolen gaming goods, but also the life of a hostage teenage gamer.