When unlucky-in-love Sam bumps into her first boyfriend, the charming but roguish Charlie, she falls head first for him all over again. Even though he broke her heart, she's determined to win him back - even if she has to chase him all over London. Sam's friends have their doubts about whether cheating Charlie is really the man for her, but they have their own problems to deal with. Uptight Mara is struggling to trust anyone after a bad break-up; sexy corporate go-getter Claudia has her self-confidence rocked after a health scare; and sensitive, intelligent Ed has been secretly, hopelessly in love with Sam for years. As Sam chases her lost love like a woman possessed, getting into ever more outlandish situations and making a fool of herself in the process, she finds herself wondering just how far she'll go to win Charlie back. Or will she finally see what's right under her nose?