The Moss family needs to get their pianola out of hock in time for the street party, so headstrong young Ruby must go out and earn money. But her new job as a corsetiere, together with competing for a place in the Olympic swimming team, is taking its toll. Brother Billy is the only one who can help but he is suffering his own nightmare due to his traumatic war experiences. The day of Ruby's swimming race arrives and Billy's fear of water reaches crisis point.

May poses for some photographs, tempted by the offer of a film acting career, but things get out of hand. Mr Brazendale rushes to her rescue and the scene is set for an affair. Dadda fears the 12th July Orange parade will be a shambles without a horse for their very own 'King Billy' to ride.