Empyrean 3.5
Threshing Day Book
Thirteen riders. Thirteen dragons. One day in the Vale. Everything you need to know about the Threshing Day book by Rebecca Yarros.
What is the Threshing Day book?
The Threshing Day book is a collection of 13 short stories set in Rebecca Yarros's Empyrean series, the world of Fourth Wing. Every story takes place on the day unbonded dragons choose, or reject, first year cadets in the Riders Quadrant at Basgiath War College. Each one is told by a different rider, from Xaden Riorson to Aaric Graycastle.
It is not Empyrean book 4. It is a companion collection numbered 3.5. Xaden's story is free to read on Rebecca Yarros's website.
Threshing Day release date
| Release date | September 29, 2026 |
| Author | Rebecca Yarros |
| Publisher | Entangled Publishing, Red Tower Books imprint |
| Length | 224 pages, 13 short stories |
| Series | The Empyrean, book 3.5 |
Threshing Day book reading order
- Fourth Wing (Empyrean 1)
- Iron Flame (Empyrean 2)
- Onyx Storm (Empyrean 3)
- Threshing Day (Empyrean 3.5)
Read the Threshing Day book after Onyx Storm. The publisher numbers it 3.5, which places it after book 3.
All 13 POVs in the Threshing Day book and their dragons
| Rider | Dragon | Color and tail |
|---|---|---|
| Xaden Riorson | Sgaeyl | Blue daggertail |
| Brennan Sorrengail | Marbh | Orange daggertail |
| Mira Sorrengail | Teine | Green clubtail |
| Dain Aetos | Cath | Red swordtail |
| Garrick Tavis | Chradh | Brown scorpiontail |
| Bodhi Durran | Cuir | Green swordtail |
| Imogen Cardulo | Glane | Orange daggertail |
| Rhiannon Matthias | Feirge | Green daggertail |
| Sawyer Henrick | Sliseag | Red swordtail |
| Ridoc Gamlyn | Aotrom | Brown swordtail |
| Liam Mairi | Deigh | Red daggertail |
| Sloane Mairi | Thoirt | Red daggertail |
| Aaric Graycastle | Molvic | Blue clubtail |
Where to buy the Threshing Day book
Hardcover, ebook, and audiobook links are on the official Threshing Day website.
Is there a Threshing Day game?
Yes. The official game is Dragonkind, and our Dragonkind game guide walks you through it. To play right now with no account, try our free Threshing Day game and see which dragon would choose you.
Which dragon would choose you?
Seven choices in the Vale. Bond or burn. No sign up.
Play the Threshing Day gameThreshing Day book FAQ
Is Threshing Day book 4 of the Empyrean series?
No. Threshing Day is a companion collection, numbered 3.5. It holds 13 short stories set on Threshing day at Basgiath War College.
When did Threshing Day come out?
Threshing Day was released on September 29, 2026.
Is there a Threshing Day game?
Yes. Rebecca Yarros launched Dragonkind at dragonkind.com two days after release. You can also play our free fan-made Threshing Day game with no sign up.
Can I read any of Threshing Day for free?
Xaden's story is posted free on Rebecca Yarros's website.