该剧主人公是一个不相信有外星人的记者Ozzie Graham，他负责调查一群“曾遇到过外星人”的人。然而在他调查这些人的古怪言论的背后，他发觉到这些假的“真相”的线索越来越指向同一件事——外星人要绑架地球。从此他便一直被“外太空是否有生命”这件事所困扰……
只有看见UFO的，属于第一类接触；
能收集到证据的，属于第二类接触；
直接和外星人接触的，属于第三类接触；
当出现被外星人绑架、劫持的情况时，就属于第四类接触。
第四类地球人 (季节 1)
Pilot 7.0
播出日期: 2016-10-17
运行时间: 21 min
概述: Things get weird for New York journalist Ozzie Graham after a suspicious car accident sends him searching for answers at StarCrossed, a support group for alien “experiencers.”
Sponsored By 6.0
播出日期: 2016-10-31
运行时间: 21 min
概述: Trying to win over Ozzie, Gerry goes above and beyond what a good sponsor would do. Chelsea opens up to Father Doug about her marriage. Tensions run high as Jeff, Don and Kurt prepare for the alien invasion.
Acceptance 6.3
播出日期: 2016-11-07
运行时间: 21 min
概述: Ozzie helps Richard face his broken marriage. Yvonne and Gerry investigate a mysterious cover up; Jonathan Walsh delivers some upsetting news to Jeff and Don.
Past, Present and Future 6.0
播出日期: 2016-11-14
运行时间: 21 min
概述: Ozzie's former boss, Jonathan Walsh, makes a surprising visit to Beacon; the origin of StarCrossed is revealed as Gina takes a trip down memory lane.
Unexplained 6.5
播出日期: 2016-11-21
运行时间: 21 min
概述: Unexplainable visions and hallucinations have Ozzie thinking he's losing his mind. Chelsea and Father Doug connect over Bible Study. Kelly continues to struggle with relationships.
Significant Other 6.0
播出日期: 2016-11-28
运行时间: 21 min
概述: Ozzie and Father Doug have a night out. Gina holds a coming out event for the members of StarCrossed. Jeff makes a connection with a stranger in an online chat room.
Last Day on Earth 6.0
播出日期: 2016-12-05
运行时间: 21 min
概述: Gerry says goodbye to StarCrossed as he readies for his own long-awaited experience. Jonathan Walsh shares game changing information with Ozzie. Don and Kelly go on a date.
Mars or Bust 7.0
播出日期: 2016-12-12
运行时间: 21 min
概述: Ozzie makes a surprising confession during an interview. Father Doug has an experience; Jeff is determined to find Kurt's killer.
Lost and Found 6.0
播出日期: 2016-12-19
运行时间: 21 min
概述: Ozzie leaves Beacon hoping to return to a normal life. Chelsea goes on the road with Operation Mongoose. The members of StarCrossed contemplate an uncertain future.
Snake Man and Little Guy 7.0
播出日期: 2016-12-19
运行时间: 21 min
概述: Ozzie has a significant breakthrough. Jeff and Jonathan Walsh square off before the impending invasion. The members of StarCrossed struggle to find meaning after the group's break-up.
季
集 10
集 10