Eleven-year-old Darcy just moved to a new country. She's feeling lost and misses her friends back home. That's when she stumbles upon a shop full of mysterious glowing jars labeled with things like "Picking up the last sweater on the rack and it's on sale" and "Having the perfect weather on your wedding day." Much to Darcy's surprise--this store sells happy feelings. After Darcy accidentally breaks one of the irreplaceable jars, she must make it up to the shopkeepers, Frida and Flora, by doing chores around the store, and is soon tasked with collecting happy feelings. But she learns that the magical business is anything but magical.