The grumpy one meets the sunshine one, but which is which? Hailed as a genius since before he could buy a beer, Theodore Sutton runs his tech company with a healthy dose of intimidation. Notorious for growling more than he speaks and never sharing an elevator, only his dog Max knows Theo's bark is worse than his bite. Sophie Alexander has too much on her plate-a useless ex-husband, a sassy teenage daughter, and more bills than paycheck. But she's an expert at being the smiling face everyone expects to see when they walk in the door at Mailbox, Inc. When a chance encounter and a case of mixed-up pets reveals the secrets they've been keeping, will they be able to maintain the careful facades they've been living behind? Or will their explosive chemistry expose them to the world?