"To be honest dude, no." Soos replied as he almost lost his balance. Behind him, the Gobblewonker roared and extended it's neck at Soos trying to bite him. Each time Soos heard a snap close behind home, he picked up his speed.
Knowing that this couldn't go on forever, Mabel took out the one thing that could help them: the journal. She opened it and began looking at every page for anything that could help them out of the predicament they were in. When she did finally find something, she closed the book shut and pointed at the frozen waterfall. "Soos, stop in front of that waterfall."
"Uh.. I don't know about this dude." Soos said hesitant with Mabel's idea.
"Yeah, Mabel, are you sure about this?" Asked Dipper.
Mabel tightened her grip on the journal in her hands. She wasn't exactly too sure if what she wanted to do might work, but she knew that if Soos and Dipper knew how she felt, the plan would fail. That was why she decided to tell both Soos and Dipper, "Just trust me guys!"
Soos nodded and glided towards the waterfall. As soon as he was close enough, he skidded to a stop barely hitting the frozen waterfall by an inch. The three turned back at the Gobblewonker who was not too far away from crashing into them. Mabel bit her bottom lip now feeling the adrenalin kicking in. She couldn't make any mistakes.
"Get ready to move Soos." Mabel called out as she watched the Gobblewonker inched closer.
"M-Mabel!" Dipper said with hesitation noticeable in his voice.
"Not yet..." Mabel muttered.
The Gobblewonker continued sliding at them. Just as it was a few feet away from them, Mabel looked at Soos and called out for him to move. "Now Soos!"
Soos nodded and glided quickly to the right. As soon as he was a few feet feet away from the waterfall, he turned just in time for the Gobblewonker to crash into the frozen waterfall causing it to crack into dozen large pieces with a large cloud of mist spreading into the air. Once the most cleared, Soos and the twins could see the Gobblewonker buried in large pieces of ice immobilizing it.
Mabel smiled in delight and hopped off Soos onto the frozen lake. After a few moments of trying to maintain her balance, she slid over towards the Gobblewonker and took her camera out. She held her over her eye and snapped a picture of the still lake monster. She laughed in triumph and moved her camera away from her face turning at Soos and Dippee. "I can't believe it..." She whispered. "We... We caught the Gobblewonker!"
Just as she said that, she heard a sound one would hear at a mechanical workshop. She turned to see sparks flying out of the lake monster's joints. She widened her eyes and slid towards the Gobblewonker placing her hand on a flipper. She hit it with her fist hoping that what the Gobblewonker really was wasn't true. When she heard the sound of metal being hit, she fell on her knees and loosened her grip on her camera letting it drop from her hands. "No way..." She whispered.
The whole big chase for the lake monster was for nothing. It was just a faux. A machine someone created to look like a lake monster. For all she knew, the lake monster probably didn't even exist.
As Mabel stared at the Gobblewonker in disbelief, she didn't notice a hand gently grabbing onto her shoulder. She looked up to see Dipper giving her a goofy smile. "Cheer up Mabel. We had fun right?"
Mabel blinked and looked back at the camera. "She scowled at it and picked it up throwing it at the snowy shores near them. She stood up and took a deep breath and slid towards Soos. "Let's go home..." She muttered with a hint of sadness in her voice.
Dipper sadly looked back at the Gobblewonker and turned away gliding towards Soos. Soos picked up both of the twins and glided away from the Gobblewonker towards the shore. Unknownst to the three the Gobblewonker was still on. One of it's yellow eyes was staring at their backs. In the center of the glowing yellow eye was a small camera watching them and taking pictures of what they looked like. Once it has enough pictures, it shut down but not before sending its pictures to the man who created it.