The series is a Netflix original based on the real 1999 Indian Airlines flight hijacking. You can watch it legally with a Netflix subscription (starting at ~₹199/month or equivalent regional pricing). Many free trials or discounted mobile plans also include Netflix.
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If you're interested in downloading "IC 814 The Kandahar Hijack" from ExtraMovies.my, here's a step-by-step guide: The series is a Netflix original based on