"All-Call" reinforces the central theme of Season 4: By the end of the episode, it’s clear that the passengers aren't just trying to save themselves; they are trying to save the entire world from an impending apocalypse.
In aviation terms, an "all-call" is a command for all flight attendants to report to their stations via the intercom. In the context of the show, this episode represents a spiritual and supernatural "all-call." The Lifeboat is leaking, and every passenger is being summoned to play their part before time runs out. Key Plot Points Manifest.S04E02.All-Call.720p.NF.WEB-DL.DDP5.1....
Saanvi and Robert Vance make a groundbreaking discovery involving the flight’s black box. They realize it contains more than just cockpit recordings; it captured every "Calling" the passengers have ever experienced, proving the supernatural events were literally "recorded" by the universe. "All-Call" reinforces the central theme of Season 4:
