After her brother, Patrick, dies in a tragic accident, Grace O’Brien finds that her life is spiralling out of control. Things come to a head when, after a night out, Grace wakes up the next morning besides Bernard O’Malley, the newewst member at the firm where Grace works. She blames the out-of-date bottle of Baileys for making her cheat on her boyfriend of one year, nine months, three weeks and six days. But then she finds she can't get Bernard - geeky dress sense, red hair and all - out of her mind. It gets worse when Grace's best friend falls in love with a blind date - Bernard. Somehow Grace can't help feeling that she's to blame for all this mess. Matters are made worse because Grace is actually in a long-distance relationship with Shane. As Grace tries to forget about her one-night stand with Bernard, she finds herself more and more attracted to him. Grace also tries to forget about what happened in Spain, can she find the strength to move on?
