Tenan and Colleen are living the good country life, having lots of fun, running, playing, climbing trees and anything else they can get into. Tenan is the nine year old big brother and Colleen is the six year old little sister. Being the big brother, of course, Tenan thinks he knows it all. If only Colleen could keep him out of trouble. She sees Tenan's crazy ideas turning into trouble, but like a runaway train, she just can't stop it and she's often caught up right in the middle.
What can a little sister do?