I'd say this is either about a pyromaniac/arsonist or about a god (in one religion or another) destroying humanity for their sins. I don't see quite as much evidence for the second one, though, since it says nothing about the sins of the people. "to burn the planet Earth", though implies someone of great power, perhaps a god or political leader, since one arsonist cannot destroy the whole world.
I'd say this is either about a pyromaniac/arsonist or about a god (in one religion or another) destroying humanity for their sins. I don't see quite as much evidence for the second one, though, since it says nothing about the sins of the people. "to burn the planet Earth", though implies someone of great power, perhaps a god or political leader, since one arsonist cannot destroy the whole world.