Demon Apocalypse

Long ago, demons managed to escape hell and invade earth, causing all sorts of chaos. The seven families of demon hunters, possessing superpowers, joined forces with the armies to defeat them. Only they could send them back to hell and seal the gates, so...They did. But that didn’t stop their training over the generations, awaiting for the second attack. 100 years later, the wait is over. The gates of hell are reopening, demons are coming back for revenge, angrier than ever. Is it the end of the world?