A man witnesses the unreasonable and undescribable destruction of Earth. He doesn't how it happened, but he is sure that all life on Earth was done for. Fortunately, he is given a second chance and a gift as compensation by an unknown powerful being called the "Overseer of the Universe." The same series of events happened to all humans on Earth and they have also been given a second chance in life. Witness the adventures of the protaganist as he wishes to live his life to the fullest, meet new comrades, and to no longer make the mistakes he made in his past life, which made him live with regrets.