While investigating a Calling, Michaela finds a mysterious stowaway. Ben clings tightly to his beliefs. Cal comes out of hiding to pursue a lead.

Hidden voices on the black box draw Saanvi in. Cal sneaks to see an apprehended Henry. During a podcast appearance, Ben seeks help.

Cal tries to understand his scar. A Calling leads Michaela to 828 co-pilot Amuta, who sheds light on what he saw. Ben makes an emotional connection.

A shared vision brings Michaela and Kyle together for a heartbreaking reason. Meanwhile, Eagan offers Ben valuable information — but at a price.

Michaela, Vance, Jared and Zeke's search for Ben at the compound leads to an explosive confrontation — and a divine miracle.

Everyone is forced to adjust as Cal guards a secret, Eagan pursues his own mission, and Michaela uncovers a tragic murder.

After finding another dead body, Michaela and Jared try to track down a serial killer. Cal goes on a date. Zeke faces old demons.

Caught in a tough position, Cal attempts to clear his name as the search for the killer continues. Saanvi tests a theory on a reluctant volunteer.

An ominous Calling shakes up Michaela and Zeke’s party. Cal and Ben receive devastating news. Michaela, Saanvi and Eagan look for the Omega Sapphire.

As the Stones race to find the Omega Sapphire, Ben finds hope in a Calling that reunites him with a familiar face. Zeke faces a difficult choice.

乘客们适应令人沮丧的新现实，本和米凯拉抓住机会解决一个呼召，而管理局紧追不舍。

米凯拉在帮助杰瑞德进行调查时暂时忘记了烦恼。卡尔测试一项新能力。本和萨维试图破解一条神秘信息。

米凯拉和杰瑞德前往码头调查本的呼召。萨维带领卡尔完成一项艰巨的任务。一个黑暗的存在潜入斯通一家。

可怕的瘟疫席卷拘留中心，萨维竭力寻求解决方案，而米凯拉在危机中挺身而出。卡尔试图联系安吉丽娜。

本为了阻止安吉丽娜而采取冒险行动，而结果却出人意料。一场家庭紧急情况让米凯拉走向另一条道路。

米凯拉和杰瑞德充分利用他们的计划安排。安吉丽娜得到伊根的支持。被拘留者在中心遭到破坏期间感到很恐慌。

死期临近，呼召开始对卡尔造成影响。小组发出求救。熟悉的面孔在意想不到的地方带来希望。

萨维在病人身上测试理论，而乘客们争分夺秒地解决呼召。伊根做出令人意想不到的举动。米凯拉面对严酷的事实。

所有的迹象都指向地球的尽头，这促使斯通一家和乘客们一起努力，在时间耗尽前破解神秘线索。

死期到来。随着紧张局势爆发和真相浮出水面，828 航班的乘客重聚并共同面对未知。