Schoolteacher Saz Paley's love life is driven not by her heart, but by an obsession with numbers. On her wedding day Saz couldn't be more certain that she has found the love of her life, heart-throb, A&E doctor and all round Mr Perfect, Dan. Better than that, he is Mr Statistical Right - Mr Eleven.

Until she finds out that Mr Eleven is actually Mr Ten. A sexual conquest she had counted is revealed to be a near miss on her wedding day. Handsome Aussie Alex turns up unexpectedly as an old friend's ‘plus one'. Alex was Saz's Mr Nine. Until he confesses that she passed out before the deed was done. He's Mr Nearly. Dan has just dropped from Mr Eleven to Mr Ten.

As Saz goes into freefall, Mr One through to Eight are reflected upon as both Dan and Alex wait to see if the course of true love can outsmart the statistics…