The team investigates a man who has the ability to harness electricity; Olivia is shocked by a blast from her past; Dr. Bishop uses homing pigeons to help him crack the case.

The team investigates a strange cylinder, found in a deadly explosion at a construction site in New York City. The cylinder was in the middle of the explosion and was completely unharmed. Olivia uncovers a correlation between different disturbing events.

Roy McComb, a man who claims to receive visions from God, sees passengers on a bus caught in a gas attack that solidifies the air around them, asphyxiating them. Now the team must use Roy’s visions to find the man responsible.

Olivia, Peter, and Walter Bishop investigate the strange death of a woman who had an even stranger child. The woman was pregnant for only hours, yet the baby she birthed was fully developed - and also aged eighty years in the span of a few minutes. Olivia asks Nina Sharp of Massive Dynamic for help.

When all the passengers on a plane die, FBI agent Olivia Dunham investigates the events and while on the investigation her partner, John Scott, almost dies. A desperate Olivia looks for help and finds Dr. Walter Bishop, but he cannot help her because he has been institutionalized. The only way to even question him is with the help of his son Peter.

Olivia continues her investigations leading her to Nina Sharp, a manipulative executive. Olivia, Peter and Dr. Bishop will begin to discover what really happened on Flight 627 and begin to uncover a larger truth.