Three brothers discover the silver cave

"Are you sure we're not lost?" Finley asked.

"Trust me, we'll return to our camp soon!" Jack replied.

"I think we should just head back to Mum, Katie and Sarah," Liam stated.

"Don't worry, we're definitely walking in a circle!" Jack assured.

"Hey, check that out!" Finley exclaimed.

The three brothers stopped strolling through the forest as Liam and Jack looked where Finley was pointing. They saw a small cave entrance in a nearby hill.

"Ooh, I wonder what's in there?" Jack asked.

"Wait, it might be dangerous!" Liam warned.

But before Liam or Finley could stop him Jack ran up the hill and inside the cave. Finley and Liam rushed up the hill and looked inside the dark entrance.

"Come out, it's too dark in there!" Finley yelled.

Suddenly Liam and Finley heard Jack gasp and the sound of a splash.

"Hey, are you okay?" Liam shouted.

Soon Finley and Liam heard Jack approach them. Suddenly they gasped as they saw him return to the entrance thoroughly coated in silver muck. His hair had extended into a chin length bob cut. His face had become more feminine while his lips had enlarged and his teeth had melted away. His arms had become more slender while his fingernails had dissolved. His shoulders, chest and waist had narrowed and his navel had filled in to be flush with his waist. His hips and thighs had widened as his cock and balls had massively enlarged. His toes had fused together so his feet now resembled ballet slippers. His legs had become long and curvaceous while his upper body had slightly contracted so he stood exactly six feet tall. Lastly his dick, mouth, chest and butt now drooled shiny sludge.

Before Liam or Finley could react Jack rapidly jerked his enormous cock and screamed in excessive climax. Explosively spewing silver cream from his dick, mouth, chest and ass Jack came all over Finley and Liam. Within moments all their clothes dissolved and Liam and Finley transformed into identical twins of Jack. Lustfully smiling at his femboy brothers Jack led Finley and Liam to the shiny pool within the cave to play with them.