WARNING, SPOILERS AHEAD. Blart is like Shrek, a parody of the fantasy genre though while Shrek parodies the fairytale side of fantasy, Blart is more of a skit of the swords and sorcery area. But it's much more than that. Whilst being witty, intelligent, satirical and at times utterly hilarious it is also a story very much in its own right. There are some very dark moments when it actually looks like the forces of evil will prevail. Blart is not your stereotypical unlikely hero. He's stroppy, lazy, unattractive and a brat although at times you can't help but sympathise for him and despite his apparent lack of intelligence he can come out with some surprising bursts of wit. For example when Beowulf is about to be devoured by sharks, the warrior cries "Help I can't swim" to which Blart dryly remarks "Learn fast." The book is heavily steeped in black humour.
The story starts when the wise and all-powerful wizard Capablanca (think Gandalf only funnier and more egotistical) arrives at the farm where Blart and his acid-tongued grandfather (who is not all he appears) live and tells Blart that he is the first-born son of a first-born son of a first-born son going all the way back to the dawn of time and it is his destiny to come with Capablanca to stop an evil cult from releasing the Dark Lord Zoltab (think Sauron except he actually has the decency to show up) from his underground prison. There's just one problem; Blart is lazy, selfish, obsessed with looking after his pigs (the only creatures in the world he seems to have any affection for) and could't care less about the world coming to an end. Fortunately for mankind Capablance is too clever for that and forces Blart to accompany him on his journey. On their quest, Blart and Capablance meet the mighty warrior Beowulf or Beo as he is unfortunately nicknamed (think Aragorn only more incompetant and a bit more selfish), the hot-tempered Princess Lois (think Princess Fiona only much more angry) and the dwarf, Cobalt (think Gimli only ... well, Gimli). The adorable thing about the characters is that they're not perfect, far from it but they really do care about saving the world, except possibly Blart but even he isn't completely cold. And Dominic Barker's humour is completely off the wall. He takes the same traditional plot devices like an old tavern and a magnificent city of nic people and such like and turns them into something funny, not a cliche has been missed and in a way he's taken that old thing, the fantasy adventure, which has been redone countless times since Lord of the Rings became fashionable and has turned it into a thoroughly original and very amusing thing.