What are those strange noises coming from the dungeon at DSA? Wiglaf and his stalwart cohorts Angus and Erica decide to investigate and inadvertently free the long-imprisoned ghost of the school founder—Sir Herbert Dungeonstone. Overjoyed to be on the loose again, Sir Herbert wreaks havoc, threatening to spoil the greedy headmaster's plan to turn DSA coed.

While Headmaster Mordred is trying to impress a new student, the ghost of one of the school's founders besieges the halls seeking his stolen gold.

When Mordred announces a three-day weekend for DSA, Wiglaf and his friends (including his Pig Latin–speaking pig, Daisy) are off to Erica’s castle. But when they arrive, they discover that Erica’s father, King Ken, has come down with a horrible case of liver pox. The wizard Zelnoc manages to cure the king’s pox, but as with all the wizard’s spells, there’s a magical mishap. Now, King Ken can only speak in Pig Latin! Can Zelnoc fix his mistake, or is there a better chance that pigs will fly?

Wiglaf ’s latest assignment for the DSA school paper is to write an in-depth article about the headmaster: Who is the real Mordred de Marvelous? Wiglaf, with help from his buddy Angus, decides the best way to learn all about the headmaster is to follow him around school for a day. But when the boys overhear Mordred and his scout, Yorick, whispering about "twins," "kidnapped!" and "gold," they decide to investigate and end up getting much, MUCH more than a newspaper story.

Sir Mort engineers a class trip to a home for "olde" knights. But when the lads and lasses arrive, they discover that Sir Lancelot has decided he’s had enough of hacking and whacking and is ready for retirement himself. Find out how Erica (his most fervent admirer), Wiglaf, and the rest of the gang get Lancelot back in action, battling the feared Grizzlegore, the world’s oldest living dragon.

It’s the last day of the school year, so it must be time for Wiglaf and all his friends at Dragon Slayers’ Academy to go home and enjoy the lazy hazy days of a medieval summer. Ummm, not quite. Not when Mordred the gold-hungry headmaster realizes there’s money to be made running a camp. This double-sized summer super special packs in twice the fun for fans of DSA, and there’s a full-color 8-page insert that pulls out and includes a ghost story, jokes, and more. The Horn Book calls DSA "a hilarious and deservedly popular magic-propelled series set in the Middle Ages.

Upon superstitious headmaster Mordred's orders, the returning students and new lasses of Dragon Slayers' Academy deck themselves in lucky charms on Friday the thirteenth, but luck may not help when a wicked dragon arrives seeking revenge.