Michaela struggles to help the passengers avoid a deadly threat; Ben and Saanvi undertake a treacherous mission to save someone they love; Jared and Vance team up, but their partnership reveals secrets that could upend their lives.
Michaela and Ben join forces to aid a desperate Flight 828 passenger; Saanvi grapples with a discovery at Eureka and the burden of secrecy that comes with it; Grace and Angelina's bond deepens; a maturing Cal enlists Zeke's help in a personal matter.
Ben's pursuit of a vulnerable passenger's calling lands him in the crosshairs of an enemy; Michaela unearths a dangerous arsenal of 828 hate; a seemingly natural disaster leads Saanvi to make a bold move.
Michaela questions Ben's developing relationship with Eureka; a new adversarial group suspicious of Ben takes drastic measures to gain answers; Saanvi proves her worth through a scientific breakthrough; Angelina reaches a breaking point.
The consequences of Ben's actions test his marriage and send Grace reeling; Michaela makes a difficult decision regarding Saanvi's secret; Cal, following his intuition, provides secret refuge to an outcast.