I can't remember the ending of a movie or TV series. When they went to war, a woman came home and erased her parents' memory of him.

Personally, I think there are several movies with such scenes, and the most memorable one is the movie Harry Potter and the Deathly Hallows (I). At the beginning of the film, the heroine Hermione used the forgetting spell "Obliviate" on her parents, and then the scene you mentioned appeared, and all the little Hermione in the photo disappeared:

Hermione and her parents

Hermione in the photo is missing.

Mainly to let parents avoid risks before fighting Voldemort, I still got my memory back at the end of the novel ~