After the events of the alien encounter on RT-4522 with the crew of the Capher, the survivors of it, Imacha Tachai and Kendra Forrest, attempt to get on with their lives. However, the dark intent of the annelid will not rest and both Kendra and Imacha soon discover that the horror of that tragic event follows them all the way to the planet they now reside on. The Rider stalks them with a singular purpose in its mind... revenge.