Watch Jiu Jitsu (2020) online

Jiu Jitsu is a 2020 American science fiction martial arts film directed and co-written by Dimitri Logothetis and starring Alain Moussi, Frank Grillo, JuJu Chan, Tony Jaa and Nicolas Cage. It is based on the 2017 comic book of the same name by Logothetis and Jim McGrath.
Jiu Jitsu begins in a jungle in a forest of Burma. The protagonist, Jake, is running away from flying stars. He ends up on an oceanside cliff, where he is hit by the stars and falls into the ocean, hitting his head and blacking out.

In the following scene, Wylie sees Jake in the water and he is left in the care of two Burmese fishers. They stitch up the cuts Jake sustained from the shurikens and bring him to a nearby military outpost assuming that's where he came from originally. After a foreboding miscommunication between an inexperienced translator and the fisherwoman, Jake is left at the outpost and starts to come to. Puzzled by words of a comet that comes every 6 years and a hole in a temple opening, the operatives get to work on figuring out where Jake came from. A talented Intelligence Officer, Myra tries to interrogate Jake but it appears he has no recollection of the events which led to him ending up in the water where he was found.

After a fight sequence Myra hits Jake with a truth serum, but this has little impact on what he divulges. She decides that it's more likely than not that he actually doesn't remember, but just as this is being discussed with other operatives, Keung begins to work his way through the base, besting fist and gun alike with advanced Jiu Jitsu. As man after man in balaclava + fatigues uniform is laid flat by an unphased Keung, the noises of gunfire and feet making contact with chests, heads and the like alert Myra and the others that something is indeed up. After more fighting, Keung approaches Jake who he recognizes with a handclasp that appears to come naturally to Jake. "We gotta go" is the only direction Keung has time to offer, and Jake accepts the first opportunity to leave behind those who interrogated and beat him. While we had seen a glimpse of it in the previous fighting, their departure from the base confirms that Jake, too, is skilled in the art of using his limbs to prevent others from doing the same.