'305' is a mockumentary detailing the misadventures of five not-so-brave members of the Spartan army charged with guarding a seemingly ordinary goat path. But when their actions lead to the death of King Leonidas and his army of 300 men, the five must find a way to redeem themselves and save Sparta from invasion.

A hunt for a lost sheep turns into a competition between Hiccup and friends as they compete to become the first Dragon Racing champion of Berk.