Forty-two-year-old Vinnie knows lots of things.

He knows new books and school shoes are expensive. He knows his teenage daughter keeps getting into trouble and he knows his seven-year-old has wet the bed every night for over a year.

What Vinnie doesn't know is whether his wife is coming back, or if he will ever get better at single fatherhood.

Ellen knows that what happened in the accident was all her fault. She knows she's too scared to get behind the wheel of a car ever again and she knows that some scars are harder to hide than others.

What Ellen doesn't know is how to move on. And she doesn't know anything about Vinnie, the taxi driver who drives her to physiotherapy every week.

And neither of them knows they're going to change the other's life forever.