At the Lighthouse, the humans led by Mack, Yo-Yo, and Flint begin to fight back against the Kree. A furious Kasius sends a messenger in the form of an apparently resurrected Tess, informing them that if they don't surrender they will all die.
Mack discovers that there are bombs planted in the human levels, which Kasius can set off remotely. They come up with a plan to lure him out into the open by threatening his ability to breed Inhumans.
At the meeting with Kasius, they are unable to get near him because of a force shield. He sets off his bombs, but the humans had moved all the bombs to one level and evacuated to the levels below. In turn, Mack destroys the Inhuman-breeding technology and flees with Yo-Yo, Flint, and Tess.
At the Zephyr, the team decides on a dangerous way to get the plane back to the Lighthouse by harnessing the gravity storm. As the storm grows in strength, they're unable to release the tethers holding the plane down.
Daisy goes below to release the tethers manually, but encounters Sinara, who engages her in a fight. Deke, despite Voss's earlier temptations to save the world by killing Daisy, helps fight Sinara instead.
At a critical moment, Daisy manages to kill Sinara and the team heads towards the Lighthouse.
Kasius reveals that he has a seer of his own and he knows that Team Coulson is on their way back.