Catch up TV on Defiance. Watch the latest and all other episodes of Defiance now online, broadcasted on 7Two. Catch up on your favorite 7Two TV show: Defiance. Replay tv on its best! Set in the near future, Defiance introduces an exotically transformed planet Earth, its landscapes permanently altered following the sudden - and tumultuous - arrival of seven unique alien races. In this somewhat unknown and unpredictable landscape, the richly diverse, newly-formed civilization of humans and aliens must learn to co-exist peacefully in the frontier town of Defiance, while fighting off external and internal threats.