Alarmed by a prophecy that the world will end with the arrival of the year 1000, the students of Dragon Slayers' Academy get some advice from Zack, a boy who has traveled back from 1999.

Wiglaf is off to see Dragon Slayer's Academy and in for a first day of school he will never forget.

When the gold-hungry headmaster of Dragon Slayers' Academy realizes that he can make money running a summer camp, Camp Dragononka is born, but there is something not quite right about the activities and the setting.

Wiglaf and his friends are on a mission to rescue Worm, the dragon they have raised from an egg, and are surprised to learn that the captor is not a gang of dragon slayers, but rather a young giantess who wants to keep Worm as her house pet.