Alien seeds hitch a ride to earth in a space shuttle crew and begin to grow. When their numbers reach the Threshold amount they will be an unstoppable swarm.
as Dr. Jerome 'Geronimo' Horne
as Dr. Savannah Bailey
as Frank Hansen
as Matt Bailey
as Shelley Hansen
as Quidd
as Dr. Thaddeus Owens
as Sheila
as Pacheco Laval
as Clay Collins
as Kerry Hansen
as Terry Hansen
as Henry Pynchon
