Doomsday: the Savior of Fire!

Human beings have necessary compassion for similar intelligent beings in the universe, so when these worlds face disasters, they dispatch savior teams to preserve the "fire" of civilization for these worlds as much as possible. And "Chen Fan" is a member of the savior team. Different worlds face different crises. Cold apocalypse, zombie virus, pseudo-human crisis... The resurrection of ancient monsters, the invasion of Titans... After the civilization of these worlds is rebuilt, his name will be sung by the world, and his great deeds will be known to every household.