As Earth battles shapeshifting aliens, two mentally connected resistance fighters will discover whether love can truly cross the stars.

It's been mere days since Kari Skye blocked out communications with her parents and her little sister, Bea. Not to mention Drae Rache, the Earthside boy that the Sympathetic Program connected her to. The boy she'd fallen for—before he kissed his Resistance handler, Willow.

Now, Kari is on the run with Alistair, one of the alien Astrals she'd previously sworn to stop and whom she once knew as Major Apollo, her commanding officer. Even as he leads her to Veil, their home world in a new dimension, the kiss they shared is ringing in her ears.

They've stopped the genocide General Titan planned to inflict on the Astrals, leaving Kari's old teammates—led by her friend Anton—to clean up the mess. But that's not the only mass murder they need to stop: Some extreme hardliners among the Astrals want to unleash a force that could wipe out humans as well as their own kind for good. And it's Kari's job to prove to the Astral Council that humanity is redeemable.

Meanwhile, back on Earth, Drae has become head of the Resistance movement, hand-selected by his old ally Trebond before she was executed. They once worked to disarm the stars, ending the wars against the Astrals. Now, they're fighting to disarm the war on Earth.

With Kari on trial at Veil, Drae organizing Earthside, Bea on a ship pursued by Astrals, and Anton at the lunar outpost, the resistance is scattered to the winds. It'll take all they have and more to stop the Astrals' plan—or die trying.

For fans of Fourth Wing and The Expanse, the stakes both on Earth and in space have never been higher in the thrilling conclusion of this enemies-to-lovers sci-fi series from the New York Times–bestselling author of Stranger Things: Starcourt Mall Escape.