Overture to Ruin

The story begins when a human protagonist, a rockstar, in their career's peak is faced with an impossible situation, the world's impending doom. War is happening all over the world and a new threat from the skies appeared. Unknown creatures have came to wreck havoc on earth. The protagonist stumbles upon an ancient book that predicted the coming of the creatures on earth. There's a preserved vial and the protagonist will need to consume it to change themselves into some kind of supernatural creature that will give them an edge against the Unknown Creatures.