Hyrule Warriors/Twilight Field

Veterans of the Zelda series should recognize North Hyrule. It's known for a few memorable scenes: the bridge used for "Super Smash Bros" on the Wii and Wii U, a showdown with Moblin and a great finale between Link, Zelda, Epona and Ganondorf from horse back combat to one on one epic sword fight. There should also be this Kakariko Village at the bottom of the Goron mountain.

Like before on Death Mountain level, you'll be on your own at the start as Lana.

Introducing Agitha, the bug collector
You'll notice on the map that about half of the area is blackened out. If you ever played "Twilight Princess" you should recognize the atmosphere for when Link himself transforms into a wolf for the first time. Anyway, you have to save that girl first. Well a girl with an umbrella. On the 3DS and Switch, remember to unlock owl statues in order to use your Ocarina to help you get to places more quicker.

On the south of the map, take out one base before going further to the corner south-west of the map to trigger a cutscene. She'll introduce herself as Agitha. In "Twilight Princess" she gets Link to collect bugs in order to get prizes from rupees to a giant wallet! Here, she gets an active role, not because of her umbrella but she's also a bug lover. Anyway, protect her as you'll be going into the twilight area.

Midna misunderstanding
Veterans should remember Midna herself. She plays Link's companion and is the only character with a much larger role than Navi. If you can get to the end credits of "Twilight Princess", you'll see her true form. In this game, she's trying hard to dominate this level. There will be another cutscene in which she stubbornly keeps Agitha's butterfly.

Anyway, the reason why Midna is so strong is because of her twilight bases. So retake all the bases while protecting Agitha at the same time. Be mindful of your Allies Base too as Midna will try to drive you mad with so much of her army officers.

A bridge to the end
Once Midna's army runs out of steam, finish protecting Agitha and take all the bases, go to the bridge area past Midna and attack her final base. Midna's power at that point should have diminished and should give you a chance to take her down to end her rampage. The cutscene shows Lana clearing up the issue, wanting to close the "Gate of Souls" and Midna agreeing to team up on the next level. Including finally letting Agitha's butterfly go.