It was Louie's first rain storm on Earth. Hocotate was primarily desert, so it didn't get much rain. When the planet did get it, Louie thought that it was impressive. How naive he realized he was. Here, the raindrops were as large as a him. Luckily, neither the pikmin nor him were actually in any danger. They had found a large glass structure a little before the rain started, which Louie was certain Olimar would say it was a greenhouse created by the Colossals.
It reminded him why he actually came to the greenhouse. Two days ago, Olimar ran off. His radio transmitter stopped broadcasting – which, because of Louie getting stranded, could only be deactivated by the wearer's choice. Louie had been shocked to the core. When he was left on the planet after repaying the debt, he admitted that it was his fault, but not his choice. Someone had to be crazy to deliberately abandon their ship on such a dangerous planet; but Louie was confident that, if Olimar could keep his sanity when he crash-landed, he wouldn't have snapped on their monthly specimen-collection trip. Louie didn't know what was going on, but he was determined to get to the bottom of it. And to get his co-worker, and indeed his friend, back.
Louie pushed a branch of some thin-leafed foliage plant out of his way. He knew why Olimar had called the original inhabitants of the planet 'Colossals' – every vestige of their past presence suggested an enormity dwarfing the tallest Hocotatan. Then there was the actual body. Olimar had taken it better than he he had, and Olimar hadn't been able to speak for the next 5 days.
Before Louie could delve further down memory lane, a sharp whistle brought him back to reality. It was distinctly Olimar's. Overjoyed, one of the Red Pikmin broke rank and ran to the source of the whistle (which was inconveniently located behind a flower pot). Louie was more hesitant. After two days of searching, he wasn't sure how to respond to actually reuniting with his co-worker.
He dropped the question as a new sound filled the air. A fluid-ish, sickly sound pierced Louie's ears, as the distinct cry of a hurt pikmin accompanied it. Horrified, Louie raced behind the pot.
And almost ran into the blade. It was a rainbow of colors, which were constantly shifting. The energy blade had went through the pikmin's head, leaving a disturbing exit wound. The blade retracted, and the pikmin fell to the ground, wilting quickly. Louie pried his eyes from the corpse, now indistinguishable from the ground, and looked up.
"Oh hi, Louie!" Olimar cried, smiling and waving his hand.