Henry was leading the others through the cave. It was getting to dark to see, so he reached for a Pokeball. The stone beneath his feet crunched and he broke through the cave floor. He fell at least fifty feet into a pool of freezing cold water. His first reaction was to panic, but then he reached for another Pokeball and let out the Mantine inside. He quickly climbed on the Mantine and breathed. He was shivering. He heard someone calling his name. "Are you okay?" the voice cried again.
"Yah, there seems to be a subterranean lake down here," Henry responded. "Just keep going; I will try to catch up with you later."
"Okay."
Henry could here some mumbling from above him. He ignored it, and said," Okay, Mantine, let's see if we can find a shore." Mantine sped off, the air rushing by was making Henry colder along with the thin layer of water gliding over Mantine, making Henry's fingers and knees cold. Henry reached for the Pokeball he was going to grab before he fell through. He released it and out came a Magneton. "Magneton, use flash and get some light in here." The Magneton created a bright flash that lit up the cave for a second and then the Magneton started to glow, trying to keep the cave illuminated.
Henry looked around. There didn't seem to be an end to this lake. "Magneton, can you be brighter?" Magneton responded and strained to get more light in the cave. Mantine kept swimming across the lake. Suddenly, something hit Mantine's underside which threw both Mantine and Henry in the air. Mantine landed upside down in the water and then it flipped over. It tried to seek out the attacker. Henry could only tread water and watch.
A Seel jumped out of the water and dived back in. Mantine went to pursue the Seel. Henry could feel vibrations in the water, as the two battled. Mantine burst out of the water and seemed to float in the air for a moment before diving back in. Moments later, the Seel flew out of the water. Magneton tried to hit it with a Thunder attack but missed and hit the lake instead.
Henry felt a jolt of electricity run through his body before blacking out. The last thing he saw was his Mantine, lying upside down in the water, it too had be knocked out be the attack.