Joan is inspired by the true story of notorious jewel thief, Joan Hannington.

Joan, a fiery and uncompromising woman in her twenties who is deeply scarred and vulnerable, is a devoted mother to her six-year-old daughter Kelly but is trapped in a disastrous marriage with a violent criminal named Gary. When Gary goes on the run, Joan seizes the opportunity to create a new life for herself and her daughter.

Adopting new identities and making new acquaintances along the way, Joan becomes a masterful jewel thief - she embarks on a thrilling and highstakes journey that challenges her every limit while driven by her desire to care for her daughter and create a secure home for them both.