The boys compete in a series of grueling army tests in order to win a place out of the Foundling Hospital and into the big wide world as a drummer boy in the army. With Vince determined to beat his main rival Mathias, a bitter battle is set to turn nasty. Meanwhile, Hetty and Sheila are forced to work together in the Infirmary as nurses tending to a sickly boy, Charlie. But will their rivalry get in the way of looking after the ailing patient?
