When giant monsters crawl out of the Atlantic Ocean and attack the Eastern Seaboard the US Government is forced to trust a trio of mischievous soldiers, specialized in piloting gigantic robots, to defend America.

After the tragic death of one of her patients, Dr. Sullivan takes an assignment working for the enigmatic Dr. Freeman at his secret military facility known only as 'The Garden,' housing test subjects made up of maximum-security inmates. Inspired by MKUltra, the illegal CIA mind-control experiment.