Overview

• ABC released the official trailer and new cast portraits, confirming the Oct. 9 premiere with next‑day streaming on Hulu.
• The trailer shows Hen and Athena aboard a civilian spaceflight that loses contact during a sudden geomagnetic storm as debris rains over Los Angeles.
• Mark Consuelos joins in a multi‑episode arc as billionaire Tripp Houser, introduced in a whale‑rescue emergency before sponsoring the space trip.
• The season opens with a dedication renaming the firehouse the Captain Robert W. Nash Memorial Station 118, honoring the fallen leader.
• Chimney steps in as interim captain, the core cast returns, and Corinne Massiah and Elijah M. Cooper are promoted to series regulars for an 18‑episode season.