Tessa Russo is the mother of two young children and the wife of a renowned pediatric surgeon. Despite her own mother's warnings, Tessa has recently given up her career to focus on her family and the pursuit of domestic happiness. From the outside, she seems destined to live a charmed life. Valerie Anderson is an attorney and single mother to six-year-old Charlie - a boy who has never known his father.

Marian Caldwell is a 36-year-old television producer, living her dream in New York City. With a fulfilling career and satisfying relationship, she has convinced everyone, including herself, that her life is just as she wants it to be. But one night, Marian answers a knock on the door ... only to find Kirby Rose, an 18-year-old girl with a key to a past that Marian thought she had sealed off forever. From the moment Kirby appears on her doorstep, Marian’s perfectly constructed world - and her very identity - will be shaken to its core.

Growing up, Josie and Meredith Garland shared a loving, if sometimes contentious, relationship. Josie was impulsive, spirited, and outgoing, Meredith hardworking, thoughtful, and reserved. When tragedy strikes, their delicate bond splinters. Fifteen years later, Josie and Meredith are in their late 30s, following very different paths.  

It’s 2 a.m. on a Saturday night in the spring of 2001, and 28-year-old Cecily Gardner sits alone in a dive bar in New York’s East Village, questioning her life. Feeling lonesome and homesick for the Midwest, she wonders if she’ll ever make it as a reporter in the big city - and whether she made a terrible mistake in breaking up with her longtime boyfriend, Matthew. As Cecily reaches for the phone to call him, she hears a guy on the barstool next to her say, “Don’t do it - you’ll regret it.” Something tells her to listen.

First comes love. Then comes marriage. Then comes...a baby carriage? Isn’t that what all women want? Not so for Claudia Parr. And just as she gives up on finding a man who feels the same way, she meets warm, wonderful Ben. Things seem too good to be true when they fall in love and agree to buck tradition with a satisfying, child-free marriage. Then the unexpected occurs: one of them has a change of heart.

Darcy Rhone thought she had it all figured out: the more beautiful the girl, the more charmed her life. Never mind substance. Never mind playing by the rules. Never mind karma. But Darcy's neat, perfect world turns upside down when her best friend, Rachel, the plain-Jane “good girl,” steals her fiancé, while Darcy finds herself completely alone for the first time in her life . . . with a baby on the way. Darcy tries to recover, fleeing to her childhood friend living in London and resorting to her tried-and-true methods for getting what she wants.

Nina Browning is living the good life after marrying into Nashville's elite. More recently, her husband made a fortune selling his tech business, and their adored son has been accepted to Princeton. Yet sometimes the middle-class small-town girl in Nina wonders if she's strayed from the person she once was. Tom Volpe is a single dad working multiple jobs while struggling to raise his headstrong daughter, Lyla. His road has been lonely, long, and hard, but he finally starts to relax after Lyla earns a scholarship to Windsor Academy, Nashville's most prestigious private school.

Six years after the fight that ended their friendship, Daphne Berg is shocked when Drue Cavanaugh walks back into her life, looking as lovely and successful as ever, with a massive favor to ask. Daphne hasn’t spoken one word to Drue in all this time - she doesn’t even hate-follow her ex-best friend on social media - so when Drue asks if she will be her maid-of-honor at the society wedding of the summer, Daphne is rightfully speechless.

Rachel White is the consummate good girl. A hard-working attorney at a large Manhattan law firm and a diligent maid of honor to her charmed best friend Darcy, Rachel has always played by all the rules. But that changes the night of her thirtieth birthday when Rachel finally confesses her feelings to Darcy's fiancé, and is both horrified and thrilled to discover that he feels the same way. As the wedding date draws near, events spiral out of control, and Rachel knows she must make a choice between her heart and conscience.

Sophie Honeywell always wondered if Thomas Gordon was the one who got away. He was the perfect boyfriend, but on the day he was going to propose, she broke his heart. A year later, he married his travel agent, while Sophie has been mortifyingly single ever since. Now, Thomas is back in her life because Sophie has unexpectedly inherited his aunt Connie's house on Scribbly Gum Island - home of the famously unsolved Munro Baby mystery.

Fixie Farr has always lived by her father’s motto: “Family first”. And since her dad passed away, leaving his charming housewares store in the hands of his wife and children, Fixie spends all her time picking up the slack from her siblings instead of striking out on her own. When a handsome stranger in a coffee shop asks her to watch his laptop for a moment, she not only agrees - she ends up saving it from certain disaster. To thank Fixie for her quick thinking, the computer’s owner, an investment manager, scribbles an IOU on a coffee sleeve and attaches his business card.

The women at Vows - a wedding planning company in Connecticut - make it their business to create memorable events for couples sealing their bonds. And though the bonds among Parker, Emma, Mac, and Laurel may not be official, they are very real - and equally worthy of celebration.

Kristen Petersen doesn't do drama, will fight to the death for her friends, and has no room in her life for guys who just don't get her. She's also keeping a big secret: facing a medically necessary procedure that will make it impossible for her to have children. Planning her best friend's wedding is bittersweet for Kristen - especially when she meets the best man, Josh Copeland. He's funny, sexy, never offended by her mile-wide streak of sarcasm, and always one chicken enchilada ahead of her hangry. Even her dog, Stuntman Mike, adores him. The only catch: Josh wants a big family.

Olive is always unlucky: in her career, in love, in...well, everything. Her identical twin sister, Amy, on the other hand, is probably the luckiest person in the world. Her meet-cute with her fiancé is something out of a romantic comedy (gag), and she’s managed to finance her entire wedding by winning a series of internet contests (double gag). Worst of all, she’s forcing Olive to spend the day with her sworn enemy, Ethan, who just happens to be the best man.

Dannie Kohan lives her life by the numbers. She is nothing like her lifelong best friend - the wild, whimsical, believes-in-fate Bella. Her meticulous planning seems to have paid off after she nails the most important job interview of her career and accepts her boyfriend’s marriage proposal in one fell swoop, falling asleep completely content. But when she awakens, she’s suddenly in a different apartment, with a different ring on her finger, and beside a very different man.