Laura's class is doing a project in which they're learning about their town's drainage system. They've been discussing it for a while and Mr. Yoshi is also having the class do models. Laura discusses the project with her Mom, who finds it very interesting. Laura's Mom wants to help Laura with the project, but then Laura's Mom learns the catch, Laura has saved the project for the last minute and it's due - tomorrow! Meanwhile, it looks like rain outside. Hamtaro sees this and decides he'd best make a quick dash for the clubhouse before it starts to pour. He heads out and meets up with Oxnard, who says that the air feels heavy and it's making his ears twitch. Oxnard has a little project idea of his own. He wants to make an umbrella out of sunflower shells. Hamtaro wants to know how many and Oxnard tells him that'll it just be one... or two... or three... actually, he doesn't know how many. A lot. They arrive at the clubhouse, where they find things in a frenzy. Hamtaro wonders what exact (thetvdb.com)