fourth wing series

Right now, there are three main books out. They are Fourth Wing, Iron Flame, and Onyx Storm.

The author plans five books total. So two more are coming. No release dates yet for those.

There's also a side book called Threshing Day. It's not part of the main story. It comes out in 2026.

Yeah, it's spicy. There are a few explicit sex scenes. The tension builds up a lot before that.

So it's not all over the place. But when it happens, the scenes are pretty steamy.

If you like romantasy with heat, you'll enjoy it. If not, you might want to skim those parts.

Start with the main books. The series is called The Empyrean.

Here's the order you want:

Fourth Wing (2023)
Iron Flame (2023)
Onyx Storm (2025)

Read them in that order. The story builds on itself. You'll be lost if you skip around.

There's also a companion book called Threshing Day. It comes out in September 2026. It's not the next book in the main story. It's a collection of short stories about different characters on their Threshing Day.

So for the main plot, just read those three. Then keep an eye out for the fourth book. It doesn't have a title or release date yet.