Hetty receives exciting news and makes a daring escape. She soon learns the streets of London are a dangerous place - how will she survive?

Hetty searches London's streets for Ida, not realising Matron has her own plans to find her. Will the police reach Hetty first, before Matron's friend gets rid of Ida forever?

A street girl breaks into the hospital looking for safety and Hetty must help by disguising her as a foundling. However, they are unaware that Matron has her own reasons to find the young girl before anyone else.