When a young boy accidentally triggers the universe's most lethal hunters' return to Earth, only a ragtag crew of ex-soldiers and a disgruntled scientist can prevent the end of the human race.
A young man comes to possess a supernatural notebook, the Death Note, that grants him the power to kill any person simply by writing down their name on the pages. He then decides to use the notebook to kill criminals and change the world, but an enigmatic detective attempts to track him down and end his reign of terror.
When the initial Cylon attack against the Twelve Colonies fails to achieve complete extermination of human life as planned, twin Number Ones (Cavils) embedded on Galactica and Caprica must improvise to destroy the human survivors.
