Heather Mulgrew (Madelyn Cline) travels Europe with friends Amy and Connie before starting her life in New York City, where she meets Jack, a New Zealander following his great-grandfather's diary, leading to an unexpected romance that tests their bond and changes Heather's path forever. Along the way, they search for a stolen item, explore European cities like Barcelona and Bilbao, and argue over their differing plans for the future. As secrets and life choices come to light, Jack shares an oncology diagnosis with Heather, causing her to confront the possibility of losing him. In the end, Heather embarks on a journey to Santa Pau, where she finds Jack and confesses her love for him.