The challenge was to find some strange blue crystals to fix MePhone4—same crystals that apparently is part of him or whatever—no one really understood and just wanted the immunity.

Lightbulb and Test Tube went together, walking further and further into the cave the crystals are.

Test Tube was looking around, seeing if there's any indicator that there's a crystal there. Then there's Lightbulb.. Mining the first rock she sees in her sight and asking Test Tube if it's the crystal.

"Lightbulb, be careful where you mine! We never know what will happen in such an unstable cave." Test Tube shouted, losing her patience for a moment before quickly recomposing herself. She needs to keep calm and focus on the challenge.

Then eventually, Paintbrush found them, deciding to stick around instead of being alone. It was the best thing for Test Tube, since now Paintbrush has to deal with Lightbulb more than her, which means she can focus on the challenge more.

"Lightbulb, why are you dressed as a pirate?" Paintbrush asked, poking at her bulb. When did she dress up? Where the fuck did she even find that costume? No one knows..

"Don't question it.. It's better if you don't." Test Tube chimed in, letting out a sigh. Paintbrush just gave her a confused thumbs up in response.

Before Test Tube could take even a single step forward suddenly the cave shook and a bunch of rocks fell, and after all the dush cleared they realized they were trapped. Whatever caused that bunch of rocks to fall in the way, must have been strong- Nevermind, it was Lightbulb who cause it- they caught her right in the act, pickaxe in hand and eyes wide open.

"Oh my golly gosh, Lightbulb! How are we gonna get out of here now?!" Test Tube yelled, letting out an annoyed groan and quickly turned away—Now they are trapped in an unknown cave and didn't find no crystal—But if Test Tube was gonna be honest, she was more worried about Fan being out there in this cave without her. Now there was no way she was gonna find him.

"Thanks a lot, Lightbulb. Can't you stop and think before doing anything?" Paintbrush sighed, trying their best to stay calm. They could already feel the tip of their bristles burning out of anger. They never thought to be stuck in a cave today.