S04 E01 · Fire + Ashes + Legacy = Phoenix
本季的第一集，凤凰基金浴火重生。根据wiki上的说法， “Associated with the sun, a phoenix obtains new life by arising from the ashes of its predecessor. ” 而legacy在这里也很容易理解。
IMDb: Ex-MI6 agent Russ Taylor recruits former Phoenix Foundation members Mac, Riley, Bozer, Matty, and Desi to hunt down a bio-weapon that's planned to be used by a mysterious organization for a devastating attack on a major U.S. city.
精简剧情：凤凰基金会重聚，Mac用化学品做了凝胶“定住”了高速攻击的生化武器。
S04 E02 · Red Cell + Quantum + Cold + Committed
IMDb剧情: General John Acosta recruits MacGyver to steal a highly classified project from a military lab in order to find flaws in its security.
剧情：为了获得权限，新老板Taylor接了个将军的活儿， 结果是个骗局。因为将军的家人被绑架了，所以凤凰基金这帮人需要救将军的家人也需要组织这个攻击美国的阴谋。本集开始铺垫反派组织，logo还挺好看。
S04 E03 · Kid + Plane + Cable + Truck
英文剧情：MacGyver and the team are on a plane that's in the air when the pilot has a heart attack。 中文剧情：Mac一行人展开了空中救援，一个带孩子的飞行员被机械师投毒了，Mac空中滑索从另一家飞机上飘了过去。