Regulus made the mistake to spend a short amount of time with his brother and his friends. They were sended to dumbledore’s office. It was empty bus Sirius saw a sparkling neckclass and took it. He played with it and spun it. It accidentally spun firward and everything spun around James, Sirius, Remus and Regulus. Peter wasn’t spinning. He was left in 1995. They all (except pete) spun into the year 1995. In front of them are four Gryffindors. One of them is James son and one of them is Regulus daughter.