The world of Record Breaker is on the brink of oblivion. Just before the foretold apocalypse, when life was normal, some thrill-seekers registered on a website that promised to deliver fake videos of their friends being killed.

As people wondered what these videos could mean, an invasion began, and humanity was forced to face a struggle for survival in an unprecedented catastrophe.

For the main hero and his friends, they defend humanity when the same website uploads an app to their mobile phones, summoning demons. From there, the newly established tamers begin the fight to survive and save the future of humanity, but the protagonist's decisions are not without consequences. What he chooses can save the lives of his friends or seal their fate.