AU - Rise of the Guardians/Tangled
In which there’s no Flynn. Jack saves Rapunzel from Gothel; even knowing her mother was not a good person Punzie is still upset for the loss so Jack brings her in town. While they’re out, Pitch arrives, scaring Punzie to death and kidnapping her in order to blackmail Jack. He kind of gets the opposite reaction as Jack got super angry e fights Pitch back, eventually defeating him.
He then goes to save Rapunzel, who - thanks to her powers - has managed to survive the water prison. She is relieved to see Jack, but at the same time she is scared to be kidnapped again.
With a smile on his face Jack shows her his powers and he tells her that it doesn’t matter what happens, he will always come for her.