Plot summary
Lois' sister Susan ( Laurie Metcalf ) visits, bringing generous gifts for the whole family. Suspicious, Lois eventually learns that Susan needs a new kidney and tries to donate one to her, and Susan begrudgingly accepts. Dewey breaks into the garage to use his new cotton candy machine, and Reese and Malcolm joyride in their new Mustang until they are arrested. Meanwhile, Francis "leads" a group of Girl Scouts on a wilderness campout journey through the desert, but they take advantage of him through various pranks.
Credits
Adapted from Wikipedia contributors, Malcolm in the Middle season 5. HTML formatting and reference markers removed.