Central Europe, modern day:

"Okay, remember your training, stay close to each other, and if Garnet tells you to duck... hit the ground immediately." Pearl stepped off the warp pad.
Connie nodded. "Yes ma'am."
"Never argue with Future Vision." Steven nodded sagely.
Bismuth chuckled. "Yeah, I learned that a loongg time ago." she grinned.
Amethyst stretched her arms back lazily. "So, G... where this beasty at?"
Garnet adjusted her glasses briefly before she started walking. "A few minutes this way."
After a moment the others followed her down the hill.

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With a flash of light, Stevonnie appeared and quickly summoned a shield, flinging it at the giant deranged spiked squirrel like a frisbee. The shield slammed into the side of the creatures' head, and it gave a high-pitched chittering noise, causing them to cover their ears with a wince.
"Ugh, that noise is horrible." Stevonnie muttered to themselves with a shake of their head, their long dark-brown hair whipping behind them.
Suddenly, the squirrel swung around, and Stevonnie was slammed with the giant scaly tail. The force of the impact broke them apart, and Steven and Connie flew through the air towards the cliff edge with simultaneous yelps.
"Connie!" Pearl called as she leapt up to grab Steven.
"I got her!" Beside her, Amethyst jumped up and quickly latched onto the girl as the cliff dropped beneath them.
The momentum of the kids' flight sent the Gems along with them, over the cliff edge.

Beneath them, unseen, a flicker of light before a strange, multicoloured band appeared in mid-air.

As Garnet and Bismuth reached the edge of the cliff and looked down, the four dropped through the band, disappearing from sight.
"Wha..." Garnet breathed, staring at the rippling band as it disappeared.
Bismuth glanced over at her. "What the hell was that?! Where'd they go?!"
"I-I don't know..." Garnet shook her head, confused.
A screech behind them reminded the pair of the corrupted Gem beast and they quickly went back on the attack, the fight a more pressing concern for now.