Young Barr aspires to be an engineer and already is working on an invention. To raise money to finish the gadget, he and a friend (Weske) take jobs as window washers. Weske wants the money to return to Ireland to visit his ailing grandfather, so Barr gives him all the money he has earned. Things work out happily for the boy when he is praised as a young genius. Pleasant children's film is a cut above the usually awful run.