A robotic "Guard" (played by Kim Woo-bin) and his AI companion, Thunder, live on Earth to manage alien prisoners who are secretly locked inside human bodies without the humans knowing.

| Feature | Requirement | Why it matters | | :--- | :--- | :--- | | | MKV (Matroska) | Supports multiple audio tracks (Hindi + Korean). | | Codec | x265 / HEVC (10-bit) | Smaller file size; better color grading for the CGI heavy fantasy scenes. | | Resolution | 1080p or 2160p (4K) | The time-travel portals look stunning in high res. | | Audio Bitrate | AC3 5.1 @ 384kbps (Hindi) | Ensures the sword fights have directional bass. | | Subtitles | Embedded SRT (English) | For understanding the Korean timeline nuances. | | File Size | 2.5GB – 6.5GB | Small enough for mobile downloads, large enough for TV screens. | | Runtime | 2h 22m (Correct length) | Beware of 1.5hr fakes. |

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