In the 27th century the D'Ent Empire rules the galaxy with an overwhelmingly powerful military force. Markis Shard-the super-powered leader of the revolt against the D'Ent-executes a last ditch plan as the D'Ent assault his sole remaining stronghold: he travels back in time to the 21st century to change history. If he stops the D'Ent invasion of Earth, he will stop the D'Ent from ever conquering the galaxy.
Unexpectedly though, Shard's device causes others to travel through time as well: two D'Ent Imperial officers from the 27th century, along with a young sorceress, her companion and an angry mountain Giant from 12th century Norway. They all arrive in Argon City, a mid-Atlantic American port city patrolled by a crimefighter code named D.A.R.T.
After a melee-which causes the Giant's death-Shard abducts Dart in order to warn him about the malevolent evil heading toward Earth...