In the gripping series, Mullen faces a complex but all-too-realistic cyberattack that plunges the world into chaos.

The ending of the series is pretty complicated and definitely leaves room for interpretation.

So, here’s an explanation of theZero Dayending.

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Netflix

What is going on inZero Day?

Who is behind the cyber attack inZero Day?

What happens to Roger inZero Day?

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Netflix

Zero Dayis now streaming on Netflix.

A version of this post was previously published inGlamour UK.

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Jojo Whilden/Netflix

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Jojo Whilden/Netflix