As two teen prodigies try to master the art of time travel, a tragic police shooting sends them on a series of dangerous trips to the past.
Two Brooklyn teenage prodigies, C.J. Walker and Sebastian Thomas, build make-shift time machines to save C.J.'s brother, Calvin, from being wrongfully killed by a police officer.
Air-supply is scarce in the near future, forcing a mother and daughter to fight for survival when two strangers arrive desperate for an oxygenated haven.
