In Professor Beaker's lab Banjo and Kazooie walked through the door with all of the test tubes they were sent to find.

"Aha, I see you've found all of the test tubes." cheered Professor Beaker "Hand them over and I will mix something up."

After Banjo and Kazooie reached the test tubes to the old mole he began to shake them around as if he were mixing a cocktail and pouring the liquids in and out of them. Once he finished he reached Banjo a glass bottle of green liquid.

"Go ahead." said Beaker "Take a drink."

"Is it safe?" asked Banjo, staring at the liquid in the bottle.

"Kind of stinks." said Kazooie, sniffing the fumes coming from the bottle "Glad I don't have to drink it."

"Go ahead." said the Professor "Drink up."

"Here goes nothing." gulped Banjo "Bottoms up."

After Banjo drank every drop of the liquid he felt himself growing smaller and smaller. He looked up and and realized after looking at his paws that he had been turned into a white mouse.

"Perfect! It works!" cheered Beaker "Now you'll be able to crawl through small places and scurry up certain areas."

"Gee, I wonder what kind of small places are around here." squeaked Banjo.

"Banjo, wasn't there a place near the stairway you could crawl through?" asked Kazooie, still inside Banjo's backpack.

"Oh yeah, I forgot. Thanks Beaker." said Banjo, scurrying out the door.

Back on the stairway Banjo hurried his way up to the hole he saw before. When he crawled inside he saw a room with a conveyor belt and crates at the end of it. On top of one of the crates was a large gold key, that could only be reached by getting on the conveyor belt.

"Hey Banjo, you think we'll need that key for something?" asked Kazooie.

"If we didn't I don't think the author wouldn't have pointed it out."

Ha, suckers.

Banjo scurried his way to the conveyor belt, which luckily had a broom leaning against it. Banjo climbed his way up and started making his way towards the crates... until the Zombie King showed up... again.

"HAHAHAHA!!!" laughed the Zombie King.

"Oh great, this guy again." muttered Kazooie.

"I'm surprised you made it this bear!" cackled the Zombie King.

"What do you want now?" growled Banjo.

"It's not about what I want, it's about what you DON'T want!"

With a snap of the Zombie King's finger the furnace at the end of the conveyer belt suddenly came to life and ignited. Above the other end was a living chute, that looked very angry.

"TTFN." laughed the Zombie King, leaving Banjo to run for his life.

The furnace growled, and grunted and banged as swallowed the conveyor belt bit by bit. Banjo ran as fast as he could, trying not to get his tiny tail burnt off and dodging the debris that was spilling from the chute.

"Hurry Banjo!" squawked Kazooie, as Banjo came to the center of the conveyor belt.

The chute groaned angrily and began spitting more things out, but Banjo ran around each one as quick as he could.

"Ouch!"

Except that one.

Almost near the end of the conveyor belt Banjo climbed onto the boxes as the furnace and the chute collided, creating a ramp for Banjo to climb on to get up to the key.

"Look Banjo, we can get the key." cheered Kazooie.

"You're right. Let's go get it."

And so Banjo scurried up the ramp and grabbed the key. Once in his paws the sound of a something falling was heard outside of the room. Banjo headed outside to see where the noise had come from only to find that a ladder had suddenly appeared going all the way up to the top of the tower.

"A ladder?" said Banjo.

"Let's climb it." Kazooie suggested.

"I have to turn back into a bear first."

"Back to the old lab again then."