That bad boy of sorcery, the adolescent with an attitude, Simon, is back .....2 years older, but apparently no wiser. Oh he's 'cool' now (or at least he thinks so), and even sports a ponytail. But when a mysterious Wardrobe suddenly appears in his bedroom he (without thinking, again!) climbs inside and finds himself back in the fantasyland that he spent so long trying to get out of last time.
It seems that the evil sorcerer Sordid, whom Simon killed then, is back from the dead and wants a way to live again as well as revenge on the little troublemaker that thwarted his plans before, so he's the one who sent the Wardrobe. Simon, anxious to get back home before he gets sucked into the problems of this demented place again, makes inquiries and is told that it's really no problem: all he has to do is get some 'mucusade' to recharge or refuel the Wardrobe, and he can be on his way.
Of course, that's not as easy as it sounds so, once again, Simon is stuck here dealing with outrageous characters and solving their problems just to get what he needs to get back home.