While rowing out in the ocean, Mitch rescues an underwater photographer, named Linda, floating on some wreckage. Linda's somewhat disjointed, frantic story about something attacking her in an underwater cave which killed her partner and destroyed her boat is misconstructed by Kay Morgan, an ambitious, publicity seeking newspaper reporter, who creates a media frenzy by starting rumors about a "creature in the bay." Harvey Miller, the new lifeguard and prankster, benefits from the events by selling undersea creature T-shirts. Meanwhile, Shauni rescues a young girl from drowning and soon becomes compelled to rescue the girl, her brother and their mother from the life they live in the slums of South-Central L.A., much to Eddie's chagrin. While Shauni deals with her possessive father who disapproves of her lifeguard job, Mitch also pressures Captain Thorp to ask for funding for new advanced motorboats, called Scarabs, for the team.。2069年,超智能电脑利用合成体僵傀控制世界,遭到人类的抵抗,为了统治世界并管理人类,超智能电脑派遣无间妖与众僵傀回到2016年,收集人类的精神信息码,提供给超智能电脑。被夺走精神信息码的人,变得毫无情感,如行尸走肉一般,人类社会惨遭涂炭。受害者苏筱筱失去记忆,流浪在城市中。充满热情、相信只要通过努力定会成功的信一,决心帮助苏筱筱找回记忆。寻找记忆过程中,他们不断受到僵傀的袭击。信一得到捕将铠甲系统,在好友志凯等人的帮助下,信一合体为捕将铠甲,痛击僵傀。在危急时刻,又出现神秘的捕将铠甲帮助信一。线索显示,原来僵傀和霸王集团有着千丝万缕的关系,苏筱筱的身世也指向霸王集团。信一面对诸多邪恶力量,一直坚持正义的信念,燃烧不尽的热情,最终消灭了整个邪恶势力,破解了重大的阴谋。