Background: There are crops on the Zenkyoshi grounds because everyone tries to stay self-sustainable. Sora has power over the wind/air, and Joe has abilities with water.
When Mimi came back from her monthly check of the food supplies, she gave the worrying news that they were low due to a poor harvest the year before and higher consumption (which everyone guessed was because of the higher incidence of battles and the like). She also reported that if the harvest was still poor the current year, they would likely need to do a large amount of trading with a Digiworld source, or otherwise buy a great amount of food from the real world (which was problematic because at least in yen and US dollars, everyone was rather poor). As they were currently in a drought, it seemed likely that buying more food would be the most probable solution to their current problem.
Sora stood up.
"Joe, come with me."
The boy in question also stood. "Okay... what're we doing exactly?"
"Helping fix the food shortage."
Joe's confusion was evident by his voice as the two left the house. "What? How do we do that?"
The others just stared and assumed that Sora had come up with some interesting idea and went back to discussing the problem at hand.
Roughly an hour later, it was pouring outside.
As everyone now discussed the probability of the drought actually being over, Sora and Joe wandered back inside, soaked but looking pleased with themselves.
"There we go, one rainstorm for the crops," she announced with a tired smile, plopping back down on a couch. Joe sat himself next to her, trying to wipe the water from his glasses, also looking somewhat exhausted.
The others stared. "You guys made it rain?" Patamon asked with a curious look.
At the couple's victorious grins, everyone glanced at each other in shock.
"Well, that... solves our harvest problem if you can keep that up," Izzy nodded, still staring.
"If," Joe stated firmly, his eyes slightly glazed over as his body wavered from side to side. "That was way more tiring than it needed to be. So if you don't mind me, I'm going to go change into something dry and pass out."