“The Monster Blood! It’s growing again!” Evan Ross stared at the quivering green blob in his driveway. It looked like an enormous wad of sticky green bubble gum, and was bigger than a beach ball. Bigger than two beach balls!

The green blob trembled and shook as if it were breathing hard. It made disgusting sucking sounds. Then it started to bounce.

Evan took a step back. How did the sticky goo get out of its can? he wondered. Who left it in the driveway? Who opened the can?

Evan knew that once Monster Blood starts to grow, it can’t be stopped. It will grow and grow, and suck up everything in its path.

Evan knew this from painful experience.

He had seen a giant glob of Monster Blood swallow kids whole. And he had seen what had happened when his dog, Trigger, had eaten Monster Blood. The cocker spaniel had grown and grown and grown—until he was big enough to pick up Evan in his teeth and bury him in the backyard!

A small chunk of Monster Blood had turned Cuddles, the tiny hamster in Evan’s class, into a raging, growling monster. The giant hamster—bigger than a gorilla—had roared through the school, destroying everything in its path!

This gunk is dangerous, Evan thought. It may be the most dangerous green slimy stuff on Earth!

So how did it get in Evan’s driveway?

And what was he going to do about it?

The Monster Blood bounced and hiccupped. It made more disgusting sucking sounds.

As it bounced, it picked up sticks and gravel from the driveway. They stuck to its side for a moment, before being sucked into the center of the giant wet ball.

Evan took another step back as the ball slowly started to roll. “Oh, noooo.” A low moan escaped his throat. “Please. Noooo.”

The Monster Blood rolled over the driveway toward Evan, picking up speed as it moved. Evan had tossed one of his Rollerblades by the side of the house. The green goo swallowed up the skate with a loud thwoccccck.

Evan gulped as he saw the skate disappear into the bouncing green ball. “I—I’m next!” he stammered out loud.

No way! he told himself. I’m getting out of here.

He turned to run—and went sprawling over the other skate.

“Ow!” he cried out as he fell hard on his elbows and knees. Pain shot up his arms. He had landed on both funny bones.

Shaking away the tingling, he scrambled to his knees. He turned in time to see the seething goo roll over him.

He opened his mouth to scream. But the scream was trapped inside him as the heavy green gunk splatted over his face.

He thrashed both arms wildly. Kicked his feet.

But the sticky goo wrapped around him. Pulling him. Pulling him in.

I—I can’t breathe! he realized.

And, then, everything turned green.