Thetenthandfinalseasonoflong-xingjiaoshiprunningBritishespionagethriller"MI-5"seesHarryreturntohispostasheadofSectionD,whereinhisRussianoppositeIlyaGavrik(JonathanHyde秋色之空ova)proposesastrategicpartnershipbetweentheircountries.New"spooks"ErinWatts(LaraPulver)andCalumReed(GeoffreyStr重生之我是元帅夫人eatfield)jointhefighttopreventallenemiesofthealliancefromsabotagingtheplanandinstigatingawar.