Lagrange, Starting the Expedition to the Sea of ​​Stars in the Last Days

A nuclear war broke out, the ecology of Earth was severely damaged, and human civilization ceased to exist! The violent atmosphere caused by the war attracted the attention of an alien civilization 8.6 Light years away. They sent an interstellar cruiser and arrived in the solar system ten years later. At the same time, a departed soul quietly descended into a corner of the world...