tkkn is a common abbreviation for Tekken: Bloodline , a Netflix anime series based on the fighting game franchise. 102 signifies Season 1, Episode 2.
:You can use tools to pull the text tracks out of the MKV. Many MKV files use PGS subtitles (image-based) or SRT (text-based). tfpdl-tkknb102.mkv
If you need a text summary of the content within that specific file: tkkn is a common abbreviation for Tekken: Bloodline