Mutt's been selected to enter the Labyrinth of Chaos and embark on the greatest adventure of his uneventful life. He's not happy about it. Why should he have to go and get the pizza? Like most of us he just can't be bothered going himself. He'll have some if you're making it anyway, or indeed, if there's some going spare; he'll even go if someone goes with him, but don't ask him to do it by himself he just can't be bothered and anyway it's just not fair!
The world is against him as well!
It's like you've parked your car in the same space in the office car park for the last five years. You've had the same car all that time and you're on first name terms with the attendant 'George' who always salutes you with a 'Morning sir' as you pass through the gate 8.48 am sharp day in, day out. Then one day you forget your pass. George won't let you in, claiming you could be anyone and that, of course it's 'morethanmyjobsworth!'
You get the picture?
You must take Mutt through the five levels of the Labyrinth to the Overworld. Work your way through troublesome tunnels and over forty rooms of conundrums and challenges. Watch out for The Entity, he's watching your every move, waiting for an opportunity to whisk you off to the torture chamber. So, keep an eye on your health bar and don't take too long! Oh yeah, I nearly forgot, he's going to get a pizza. Strange that really, but never mind. (As the game unfolds you'll see just what a great simulation of take-away food acquisition this game really is - not!) On your way to the Overworld you'll have to release the lost souls of unfortunate Divils (who have no doubt been unsuccessful on previous pizza missions) which will also allow you to progress to the next level. You'll need three artefacts to help you do this that you can find ... somewhere in the game!
Good luck and enjoy that pizza when you get it. To be honest, I'd have just had one delivered.