AfterthegruesomeeventsonCaprini,Sharpandhiseliteteamoftough,wittyandtriggerhappyspaceMarinesmustnowheadouttotheicyplanetMezzotoinvestigatefurtherMa'haractivities.Whattheywillencounterwilldefytheirimaginationsastheytacklegiantmaneatingsnowworms,anundergroundcityofCyborgs,aslewofmurderousalienentities...
