When Sunny Deveen's phone rings with a wrong number while she is struggling to properly hang a mirror on her wall, she takes advantage of the incredibly helpful man on the other end by asking his advice. After she achieves success, she saves the man's number in her contacts. Just in case.Fergus Huston only wants to order a pizza, little knowing he'll be called upon to explain how to find a stud. Then he is surprised when the same woman calls him a week later asking him what an Allen wrench does. Realizing just how much he is enjoying the "advice" calls, he adds the woman's number to his phone, and soon after, the tables are turned when he needs her advice about which restaurant she recommends for a first date.As time passes, the still anonymous calls become more personal, and Sunny and Fergus realize they want to know much more about the person at the other end of the line, but both are afraid if they meet, they might lose the special relationship they are developing. Until Fergus decides he must meet her, this mystery woman, no matter what the outcome might be.