Standing on the precipice of adulthood, a group of friends navigate new relationships, while reexamining others, during their final summer before college.

A case of mistaken identity results in unexpected romance when the most popular girl in high school and the biggest loser must come together to win over their crushes.

For a long time, Natalie, an Australian architect living in New York City, had always believed that what she had seen in rom-coms is all fantasy. But after thwarting a mugger at a subway station only to be knocked out while fleeing, Natalie wakes up and discovers that her life has suddenly become her worst nightmare—a romantic comedy—and she is the leading lady.

18-year-old Penny Cooper spent years pining for Johnny Sanders Jr., but when a mysterious musician shows up on the beach, Penny is torn.

Tessa Young is a dedicated student, dutiful daughter and loyal girlfriend to her high school sweetheart. Entering her first semester of college, Tessa's guarded world opens up when she meets Hardin Scott, a mysterious and brooding rebel who makes her question all she thought she knew about herself -- and what she wants out of life.

Lara Jean's love life goes from imaginary to out of control when her secret letters to every boy she's ever fallen for are mysteriously mailed out.

Seventeen-year-old Stella spends most of her time in the hospital as a cystic fibrosis patient. Her life is full of routines, boundaries and self-control — all of which get put to the test when she meets Will, an impossibly charming teen who has the same illness. There's an instant flirtation, though restrictions dictate that they must maintain a safe distance between them. As their connection intensifies, so does the temptation to throw the rules out the window and embrace that attraction.

When teenager Elle's first kiss leads to a forbidden romance with the hottest boy in high school, she risks her relationship with her best friend.

When a down-to-earth Chicago baker and a soon-to-be princess discover they look like twins, they hatch a Christmastime plan to trade places.

To prove a point about measuring up and fitting in, Texas teen Willowdean “Dumplin’” Dickson enters a local pageant run by her ex-beauty queen mom.

Lara Jean and Peter have just taken their romance from pretend to officially real when another recipient of one of her love letters enters the picture.

After a prank blows up a studious high school senior's life, he shares a list of certain things he wishes he'd done differently — and maybe still can.

After the devastating events of Avengers: Infinity War, the universe is in ruins due to the efforts of the Mad Titan, Thanos. With the help of remaining allies, the Avengers must assemble once more in order to undo Thanos' actions and restore order to the universe once and for all, no matter what consequences may be in store.