Beth is on a ski trip with her family, and, with no one her own age to hang out with, she's determined to hang out with her older sister and brother and prove to them that she's mature. Her older sister, however, is only determined to flirt with the French ski instructor. Beth finds she has a talent for skiing, which comes in handy when her sister accidently sends her down the most dangerous slope. Beth finds her younger brother there and helps him, earning compliments from the ski instructor. She realizes that she's treated the younger brother the way her sister treats her, and that to really be mature, she's got to be with her younger siblings as well as her older ones. ( )