When a gang carry out a daring drugs raid on a hospital pharmacy, during which several staff are injured and one medical orderly is brutally killed, the Minneapolis police department can only conclude that it must have been an inside job.

For Lucas Davenport, this case is about to get personal. Weather Karkinnen, Lucas's surgeon wife, was due to perform a high-profile operation on the day of the raid, and as an unwitting observer of the criminals' desperate getaway, she is now in grave danger.

As the culprits embark on a series of vicious murders in an attempt to silence any witnesses, it becomes apparent that a city gangster ring known as 'The Seed' is behind the attacks. With the body-count rising, Davenport knows that time is running out to identify the inside plant in the hospital before the gang catches up with Weather once and for all.