该剧讲述年轻的FBI女特工奥莉维亚奉命加入代号为"Fringe"的秘密部门,与高深莫测的神秘科学家沃尔特·毕舍普合作调查一系列无法用科学解释的超自然现象的故事 。After the extraordinary turn of events that shockingly left an imprisoned Olivia "over there," she fights to find her way home. Meanwhile, Peter and Walter try to move on with their lives unknowingly alongside alternate Olivia.