It's the 1970's in the sleepy English village of Rushlon, and Mickey Maloney and Fred Roper are next door neighbours, in and out of scrapes from the day they're born, sharing everything, from their first cigarette to their first kiss. They're convinced that nothing will ever keep them apart - but they're wrong. Fifteen years later, Mickey is beginning a new phase of her life, with a small flower shop in London. Squeezed into the tiny flat above with her young son, Joe, she's a loving, if chaotic, single mum, juggling home and work and trying to build a secure life for her and her son. Fred's new phase is marriage. He and his girlfriend, Rebecca, are looking forward to a wedding day just months away. But then he bumps into Mickey in Toys-R-Us and his whole world turns upside down..