A possible concise summary is:
The video is about three final messages from people who knew they were about to die. The first message is from an American POW who carved a memorial on a rock after being abandoned by the Japanese on Wake Island. The second message is from a couple who were left behind by a dive boat in Australia and wrote on a diver's slate before they disappeared. The third message is from a hiker who got trapped in the Grand Canyon and wrote on his phone before he died of heat stroke. The video ends with the narrator asking the viewers to like, subscribe and follow him on various platforms.
Here are the key facts extracted from the text:
1. On December 7, 1941, the Japanese attacked Pearl Harbor and Wake Island, where they captured and executed 98 American POWs.
2. One of the POWs escaped and carved a memorial on a rock for his fellow victims before he was recaptured and killed.
3. The Japanese admiral who ordered the executions was later tried and executed for war crimes.
4. On January 25, 1998, Tom and Eileen Lonergan were abandoned by their dive boat on the Great Barrier Reef in Australia.
5. The couple was missing for 48 hours before anyone noticed their personal items on the boat and launched a search.
6. Some of their diving equipment and a diver's slate with their final message were found months later, but their bodies were never recovered.
7. Bryce Gilles was an Eagle Scout and a student at Northern Arizona University who loved hiking in the Grand Canyon.
8. In July 2009, he attempted a difficult trail called the Deer Creek Thunder River Loop, but he got lost and trapped on a ledge overlooking the Colorado River.
9. He died from heat stroke and dehydration after writing a final message on his cellphone.
10. His body and phone were found six days later by a search party.