Complex sentence: The "Darkside" are a team of the Arkz, founded by a man known only as "Red" who try to intercept and destroy the government's plans for the over development of the planet.
Split into simpler sentences: The "Darkside" are the Arkz, founded by a man known only as "Red". The Arkz try to intercept and destroy the government's plans for the over-development of the planet.