From the outside Joel looks like the picture of success: a TV scriptwriter with a smash hit who is still together and in love with his teenage sweetheart, Amber. In reality he is falling apart at the seams, and headed home to reconnect with best friend Theo--to whom he hasn't spoken since they were sixteen. Theo has been living in his parents' shed, nursing a broken heart and a wounded ego, convinced life can't get any worse. Then he's evicted on his 30th birthday--and Joel turns up on his doorstep. Can the promise they once made to walk all 184 miles of the Thames Path help them find their way back to the truth--and to their friendship?