Choosing the right man is never an exact science. For Claire Donahue, the feisty, logic-loving chemist with the ever-changing hair color, analyzing the details of her relationships is second nature. After a short and unheard of dry spell in her dating life, Claire finds plenty to analyze when three very different men begin vying for her attention. But when she starts looking for a long term commitment, and her relationship with each man deepens, will her constant studying of the facts give her clarity or just end up driving her crazy?