A blue wispy ghost laughed as it passed by with the green gloom of the ever extending ghost zone in the background. The view panned to the left to reveal a dense jungle of heavy plant life. Tall trees were covered with vines from top to bottom; it would have been nearly impossible to transverse the dense jungle because of the overwhelming amount of plant life.
Far beyond the boundary of the jungle sat a large green castle that appeared to be made of the same green viney plant life that made up the jungle. Inside the castle's keep, the plant life continued, making up the floors, walls, ceiling as well as all of the furnishings and fixtures.
Further beyond, inside a large throne room guarded by Venus fly traps and slithering vines, a very large ghost sat back in the large throne which appeared to be made of rock that had been covered with moss and vines. The ghost was made of plant material and vines and had glowing red eyes. He was Undergrowth, an extremely powerful ghost that had seen the hand of defeat at the hands of the Phantom siblings at least twice by this point.
He rested his head in one of his massive hands as he silently growled at a viewing window made of swirling water. Scenes of his first defeat at the hands of Danny flashed through the viewing window. Danny is first seen fleeing several vines only to accidently freeze them as he tries to get away. Next he is seen fighting Danny again, only this time he's not running away. He seems much more confident in his abilities and freezes many more vines with his powers. Undergrowth is seen shrinking as his power begins to wither. He is last seen roaring in agony as light begins emitting from his eyes and mouth before he explodes, signifying his defeat.
The watery viewing window morphed again until his jungle realm was seen in the ghost zone. Undergrowth is seen holding Dani in a tight grip before his hands freeze over and the girl easily breaks free. She is shown blasting many of his vines with freezing attacks before she focuses on Undergrowth himself. He lunges for her but is frozen in a block of ice when she throws a massive ball of snow and ice at him. She is next shown blasting his entire realm with a ball of freezing energy.
"ARGH!" Undergrowth yelled angrily. "How can my children grow and thrive on the Earth with those filthy and destructive flesh dwellers ruining their breeding grounds?" he angrily asked himself.
The watery viewing window showed Danny powering up his freezing powers before he is seen blasting a powerful blast of blue energy.
"How could such a weakling defeat me by exploiting my only weakness!?" he yelled angrily. "If I am ever to defeat him, I'm going to need to adapt myself to the cold so that his powers no longer have an effect on me," he concluded as a solution to his problem. "But how can I adapt myself if my children are so easily affected by the cold?" he asked himself.
He continued to observe the watery viewing window as it showed Amity Park in the present time. Snow has begun to fall, but it was not yet collecting on the ground as it was still too warm for it to stick. People however were dressed warmly for the approaching colder weather soon to come. The sky was overcast and people were hurrying around to finish up their shopping. Some people were shown carrying frozen turkeys; it was the day before Thanksgiving and people were buying their last minute turkeys. Other people were busying themselves with gathering firewood or chopping down future Christmas trees.
"Perhaps if I can find a plant that can thrive in colder weather?" Undergrowth wondered to himself as he continued to watch the scenes in the watery viewing window with a look of boredom. Then something caught his eye. "What's that!?" he asked, shocked at what he had discovered.
In the watery viewing window, a father and his son were on a Christmas tree farm and had just finished chopping down a tree that they planned to decorate for the coming holiday. "Do I get to help decorate it this year, papa?" the little boy asked excitedly as his father tied a rope around the tree's trunk.
"Mhmm," the boy's father replied with a grin as he pulled the rope over his shoulder. "After we eat tomorrow night," he confirmed.
"I'm gunna put all of my decorations on it!" the little boy said cheerfully as he walked beside his father who was pulling the tree away from where it once stood. As they passed out of view, the scene stopped panning and zoomed in on a pine tree that had yet to be cut down.
"Evergreen," Undergrowth whispered in awe before an evil grin spread across his face. "The common pine tree is the ticket I've been looking for," he concluded. "Normal trees lose their leaves and go into hibernation when it gets too cold and they regenerate after the weather warms, but pine trees remain green year round, no matter how cold!"
He laughed maniacally before swatting at the watery viewing window with his arm, sending water splashing all over the floor before it was soaked up by all of the vines.
"In order to protect myself from the flesh dwellers freezing attacks, I need only to incorporate pine needles into my being and I will be invulnerable to the cold," he verbalized his plan. "Prepare yourself, Danny Phantom," he said with an evil grin. "My revenge will come swiftly, and this time, there won't be a thing you can do to stop me!" He laughed maniacally one more time before the scene ended in a blackout and began the theme song.