Laura visits the local museum to gain some information for an independent study assignment. As she talks with her family about it, they talk about something at the museum that they think looks like a giant sunflower seed. Hamtaro, listening in, focuses on ""giant sunflower seed."" He takes the news to the ham-ham gang, who wonder about the origin of this giant sunflower seed. They think maybe that aliens brought it to the planet Earth. One thing they do know: they have to get the museum to check this out.