Twenty-eight-year-old Andrea returns home from a business trip to find Alex, her boyfriend of fourteen years, nervously waiting for her. Assuming he's finally going to propose, Andrea's instead horrified to learn he's been cheating on her and is leaving to be with the other woman, who he calls Andrea's opposite. At first Andrea's paralyzed by shock and sadness, but the business analyst soon forms a plan: change every last detail of her life and become her opposite so Alex will come back to her. It's a challenge at first, but soon Andrea's loving the changes she's making, the new activities she's doing, and the new people in her life. But will she change enough to get Alex back? And if she does, will he fit into the wonderful new life she's creating for herself?