Belly measures her life in summers. Everything good, everything magical happens between the months of June and August. Winters are simply a time to count the weeks until the next summer, a place away from the beach house, away from Susannah, and most importantly, away from Jeremiah and Conrad. They are the boys that Belly has known since her very first summer—they have been her brother figures, her crushes, and everything in between. But one summer, one wonderful and terrible summer, the more everything changes, the more it all ends up just the way it should have been all along.

Sixteen-year-old Lara Jean Song keeps her love letters in a hatbox her mother gave her. They aren’t love letters that anyone else wrote for her; these are ones she’s written. One for every boy she’s ever loved - five in all. When she writes, she pours out her heart and soul and says all the things she would never say in real life, because her letters are for her eyes only. Until the day her secret letters are mailed, and suddenly, Lara Jean’s love life goes from imaginary to out of control.

After the loss of her mother and her own battle with breast cancer, Joanna Teale returns to her graduate research on nesting birds in rural Illinois, determined to prove that her recent hardships have not broken her. She throws herself into her work from dusk to dawn, until her solitary routine is disrupted by the appearance of a mysterious child who shows up at her cabin barefoot and covered in bruises. The girl calls herself Ursa, and she claims to have been sent from the stars to witness five miracles.

In the Land of the Rising Sun, where high culture meets high kitsch, and fashion and technology are at the forefront of the First World's future, the foreign-born teen elite attend ICS - the International Collegiate School of Tokyo. Enter foster-kid-out-of-water Elle Zoellner, who, on her 16th birthday discovers that her long-lost father, Kenji Takahara, is actually a Japanese hotel mogul and wants her to come live with him. Elle jets off first class from Washington, DC, to Tokyo, which seems like a dream come true.

After the untimely deaths of her aunt and mother, young Riley Mays moved from Chicago to her cousins’ Wisconsin farm. Here she found solace in caring for her extraordinary adoptive brother, exploring the surrounding wild nature, and gazing at the mystical moon - a private refuge in which she hides from her most painful memories. But ten years later, now twenty-one, Riley feels too confined by the protective walls she’s erected around herself. When a stranger enters her family’s remote world, Riley senses something he’s hiding, a desire to escape that she understands well.

After losing her job in New York, Amber Green isn’t looking forward to visiting her godmother in the sleepy village of Cranbridge. With its empty lanes and rundown shops, it’s hardly a place to mend her lonely heart. But when Amber discovers that Cranbridge Stores, owned by her godmother, Cathy, and son, Josh, is under threat of financial ruin, she realises that her skills as a window dresser might just be able to help save the struggling shop.

Tess Strebel can’t recognize her own face. She can’t recognize her home. Her bedroom is unfamiliar. And she can’t remember the handsome stranger lying next to her in bed. A stranger who claims he’s her husband. Tess reads a letter in her own handwriting, composed during a rare lucid day, explaining her life as it now exists: she was in a terrible car accident one year ago. Every morning, she wakes up unable to remember most of the last decade. Including her own wedding.

Lizzy Moon never wanted Moon Girl Farm. Eight years ago, she left the land that nine generations of gifted healers had tended, determined to distance herself from the whispers about her family’s strange legacy. But when her beloved grandmother Althea dies, Lizzy must return and face the tragedy still hanging over the farm’s withered lavender fields: the unsolved murders of two young girls, and the cruel accusations that followed Althea to her grave.

Overworked and underappreciated, single mom Amy Byler needs a break. So when the guilt-ridden husband who abandoned her shows up and offers to take care of their kids for the summer, she accepts his offer and escapes rural Pennsylvania for New York City. Usually grounded and mild mannered, Amy finally lets her hair down in the city that never sleeps. She discovers a life filled with culture, sophistication, and - with a little encouragement from her friends - a few blind dates.

Tokyo resident Keiko Furukara has never fit in - neither in her family, nor in school - but when at the age of 18 she begins working at the Hiiromachi branch of national convenience store chain Smile Mart, she realizes instantly that she has found her purpose in life. Delighted to be able to exist in a place where the rules of social interaction are crystal clear (many are laid out line-by-line in the store's manual), Keiko does her best to copy the dress, mannerisms, and mode of speech of her colleagues, playing the part of a "normal" person excellently, more or less.