Composite as an accordion, and Yellow Up Arrow as a leprechaun, going trick-or-treating.  What could possibly go wrong?

On the night of Halloween, Composite and Yellow Up Arrow finished their chores and proceeded to go trick-or-treating.  They got tons of candy from all sorts of different houses.  Presumably because of their cute costumes.

At one point, Composite felt a bit queasy and wanted to eat one candy out of his bag.  Then again, so did Yellow Up Arrow.  They already had a ton of candy, and each promised to only eat one.

Unfortunately, the BUSHY VAMPIRE showed up out of nowhere!  It scared them away... and they lost their candy.

Yellow Up Arrow: What can we do now?  We can't confront that monster again...
Composite: We'll just have to wait for someone to come by and recover our candy.  Until then...

Composite fainted... like usual.  And YUA threw a rock into the distance... like usual, again.

MEANWHILE...

Grape screamed and fell down.  This got the attention of Composite and YUA.

Turned out that Hex and Grape were also going trick-or-treating and they saw the Bushy Vampire too.

Composite: Wait, he didn't steal your candy as well?
Hex: Oh my gosh... your candy is gone Here, you guys can have my candy, I'm not hungry.
Composite: Wow, thanks a lot!

The boys then left with Hex's candy.  This made everyone happy.  Shortly...
The rock thrown earlier hit the Bushy Vampire in the forehead.

This creature screamed, revealing that he was Cubey all along.  Cubey treated Halloween unwisely.

And worst of all, Composite's new candy turned out to be stale.