THE TIME TRAVEL RITUAL

You are a group of friends who live on Earth in the 21st century. You have discovered a way to time travel. It is a fairly simple ritual, there is only one catch: You cannot control when or where you end up. As thrill-seekers and explorers of the universe, you frequently go on crazy, time-travelling adventures where you will have to the find the 4 ingredients for the ritual to time travel (hopefully) back home.