New Earth

In 2121, interstellar travel isn't a problem anymore. A group of students won a prize to travel to Kepler-452 star system. Right before they change their route back home, they receive news that the Earth has just been destroyed by a sudden worldwide volcano activity. They have to land on Kepler-452b planet, which is proved to be habitable for human life. As the leader, you'll have to help everyone start a new life and populate (Pregnancy) the New Earth. (Please notice that there are no tentacles, aliens, monsters... in the story.)