Jack got out of his tree and came to a sudden conclusion. He was a strong, independent man who didn't need anyone. He marched through the forest, a spring in his step... until he tumbled down a cliff. He tumbled and bumbled and crashed down until he fell into a river. That river carried him far away until he washed up on the shore of an underground lake.
"Nice place."
He said.
"I'm a live in this sucker."
So for years Jack dwelt in the underground cave with his only companions the fish of the cave and a rather large eel that lived in the lake. He grew rather fond of that eel and soon asked it out. Oh how they laughed over a dinner of fish and mushrooms light by the warm bioluminescence of cave moss. The years passed and the two grew old until Jack finally passed in his sleep. The eel looked sadly at his body before eating him and swimming back to its underwater cave.
The End.