As Jenny Lee settles into her role, there is a new arrival at Nonnatus House, Chummy. A welcome pair of extra hands, Chummy sets about showing her worth, but an overwhelming keenness to please and her inability to ride a bike prove obstacles in gaining the respect of Sister Evangelina. Meanwhile a chance encounter with a young pregnant runaway forces Jenny to see an unfamiliar darker side of life.As Jenny Lee settles into her role, there is a new arrival at Nonnatus House, Chummy. A welcome pair of extra hands, Chummy sets about showing her worth, but an overwhelming keenness to please and her inability to ride a bike prove obstacles in gaining the respect of Sister Evangelina. Meanwhile a chance encounter with a young pregnant runaway forces Jenny to see an unfamiliar darker side of life.