What's the tagline?

Have you ever noticed how movies sell their story in just a single line?
If you look for movie posters on the streets you’d find interesting taglines. For example when I Am Legend was released I remember the tagline was: The last man on Earth is not alone.
When there’s not tagline, the story is week. These days I see the announcement of Tom Clancy’s Jack Ryan, the Amazon’s Show. The thing is, you can’t see any tagline on the posters, just a big title and flames. Maybe they have their reasons but from an engagement point of view, it’s weak.
It turns out that this isn’t just true for movies, but for everything you try to communicate a message with.
Tell us, in just one sentence, what it is about. Tell us your story so we’d want to know more about it.
What’s your tagline?