The movie opens with a young Elsa and Anna learning a bit about their family history from their parents at bedtime. Not only are the girls super cute — and act exactly like every other child gearing up to hear a story before snoozing — but we quickly learn never tell kids not to go into a dark forest.
King Agnarr, aka Anna and Elsa's very good-looking pops who rocks a Ron Swanson-level mustache, launches into a whirlwind story about how the Arendelle troops — whom are described as kind and peaceful because, hey, its his army and all — ended up in a violent war with the people of Northuldra. In a flashback, we learn that the folks from Arendelle "let their guard down" while building a dam (quite the humanitarian effort) and the amicable relations quickly went to sh*t.
Then we get a bird's eye view of the possibly world's slowest and least-gory war. Sure, it's a kids movie, but it looks like the end result of someone attempting to make Game of Thrones kid-friendly.
Amid the violence, King Agnarr gets rescued by a mysterious stranger, who we later learn is their mother. Obviously, the girls are very impressed — and thrilled their dad is alive! — and head off to bed with no fights, begging, or crying (though not until after they get a lullabye). Truly a fairytale for parents.