Theory

Main theory goes as following:

Starr Park was a theme park between the 60’s 70’s. It was the most popular theme park ever. But then, something happened. Happened a huge gas-accident. Some people may be died. But every employee for Starr Park and some people who were visiting there became to brawlers. Superhuman warriors. And later on Supercell bought Starr Park and created an evil plan. Very, very evil. Starr Park gets re-opened, but they try to take over the world. And what date? 14.4.2021