The book opens with a super-swank dinner party. Who's on the A-list? You've got all the heavy-hitters in Chinese mythology: gods, goddesses, demons, spirits. If they're big and powerful, they're there.
The Monkey King, who's down below on his mountaintop, hears the music and the scent of wine drifting down from the party up above. Never one to say no to a good party, he speeds off to the heavens to attend the party, which he assumes he's been invited to.
By the way, just so you know, the Monkey King is this amazing ruler of the monkey world. He's mastered kung-fu in addition to a bunch of other things, including the "four major heavenly disciplines": "fist-like-lightning," "thunderous foot," "heavenly senses," and "cloud-as-steed"—all of which means that's he's basically immortal.
The Monkey King thinks he's some seriously hot stuff, and definitely guest material for that dinner party he's crashing. He tells that to this bouncer/guard, but the bouncer/guard isn't having it since the Monkey King doesn't have an actual invitation.
Plus the Monkey King doesn't have any shoes on. No way can he get in without shoes.
Even though the Monkey King tries to convince the bouncer/guard that he should still get in, everyone just laughs at him because he's just a monkey.
That really angers the Monkey King, so the Monkey King takes the bouncer/guard by his ponytail (yep, the bouncer's stylin') and bashes him all over the place, thereby causing extreme chaos at the party.
After he's shown everyone what's what, he returns to his home on Flower-Fruit Mountain sulky and mad.
He also—for the first time—notices his own, thick monkey B.O. He stays up all night trying to figure out how he can get rid of the smell.