Murky Dismal was busy making some new gloom clould mixture.

"Please can I help?" begged Lurky eagerly.

"You can pour these ingredients into the cauldron," said Murky.

"This is fun," said Lurky, but he picked up the wrong tin.

"Not that one!" shouted Murky Dismal. But it was too late.

Lurky tipped Murky's explosive powder into the cauldron.

Suddenly there was a loud explosion.

Lurky and Murky were covered by a huge gloom cloud.

Murky Dismal's laboratory was ruined.

"I'll never let you help out again!" Murky shouted angrily at Lurky.