As a travel escort for seniors, Emily Andrew-Miceli has led her feisty Iowa clan all over the world. This time, they're off to see historic windmills, classic Rembrandts, and picturesque canals in Holland, if they can ever unplug from their smartphones, that is. Joining them is the high school class from Bangor, Maine, whose 50th reunion celebration goes south faster than a fallen Brussel sprout soufflé as old rivalries start heating up. Worse, Emily's hopes for a 100% survival rate on this trip are dashed when an important member of the tour suffers a tragic (and highly suspicious) accident. Then the saucy seniors, wild night of drug-laced desserts and risqué shows in Amsterdam's infamous Red Light District gets even more mysterious when one unpopular reunioner goes missing . . .