I'm trying to located a film which I remember watching with my dad in the early 90s, although the film might have been older. There is a small town which comes under threat once a year and must be saved by a chosen one. He is the only person who retains the memory of the night each year, the entire population of the town seem to forget come the morning.
This year, a teenager must take on the role of saving the town from an alien threat instead of his father who has previously protected the town. There might have been a scene in an abandoned warehouse and I believe the son tries to explain the situation to his female interest.
I've been searching for this film for quite a while now!