Complex sentence: Andy agrees to join the show, thinking he can sabotage it from the inside and thwart the corporate take-over of his beloved Mission Hill, but he underestimates the seductive power of the MTV lifestyle.
Split into simpler sentences: Andy agrees to join the show, thinking he can sabotage it from the inside and thwart the corporate take-over of his beloved Mission Hill. But he underestimates the seductive power of the MTV lifestyle.