It was said that the film centers on these time-traveling hitmen dubbed loopers who travel back to the past to wait for criminals who have committed a serious crime in the future. If the loopers execute the criminals in the past, the crime simply vanishes in the future. Willis will essentially be playing the same character as Joseph Gordon-Levitt, although in different time periods.
No production schedule was announced for the film. Johnson will direct the film from his own script.