One hot summer day, stuck in traffic on her way to pick up the cake for her daughter's sixteenth birthday party, Grace Adams snaps.

She doesn't scream or break something or cry or curl into a ball. She simply abandons her car in traffic and walks away. But not from her life - towards it. Towards the daughter who has banned her from the party. Towards the husband divorcing her. Towards the terrible thing that has blown their family apart . . .

She'll show her daughter that no matter how far we fall, we can always get back up. Because Grace Adams was amazing. The world and her family might have forgotten. But Grace is about to remind them ...