If dating her best friend's brother is wrong, then why does it feel so right?

Delia thought working with her best friend's brother at Betty's Burgers would be easy—until Jack-the-Jerk transformed into Jack-the-Hottie, the guy who rescues dogs and remembers exactly how she likes her coffee. But why is he keeping their budding romance a secret? If her best friend finds out, Delia risks losing the only family she's ever known.

Jack's world is turned upside down when he sees Delia in her retro waitress uniform. She's no longer just a pesky little sister but a captivating, free-spirited girl who challenges his carefully ordered life. Her hot-pink striped hair and artsy flair are driving him crazy—in the best way. But can he really fit her into his neat, safe world?

With everything on the line, will Delia and Jack choose to follow their hearts or play it safe? One thing's for sure: their summer at Betty's Burgers will be unforgettable.