What happens in this video ?
Mid-Air collision of two aircraft that were performing aerobatics display along the coastline at Alba Adriatica, Italy, on May 31st 2015. One aircraft, a Van's RV-8, lost a wing and crashed into the sea, killing the pilot. The pilot of the other aircraft, a Van's RV-7, managed to make a forced landing on the shoreline, causing the airplane to flip upside down. The pilot survived.
The Van’s Aircraft RV-7 / RV-8 are two-seat, single-engine, low-wing homebuilt airplanes sold in kit form by Van's Aircraft, and designed for aerobatics.