Summary - 150 words

The first part of the book "Proof of Forever" is about four girls named Joy, Tali, Luce and Zoe who went to a summer camp, and there they became best friends. The four girls made a lot of memories at summer camp. After summer camp was over they all went their own ways, and they all lost connection with each other. Years passed by until one of them invited the other three girls to a reunion they were going to have. At the reunion all four girls decided to go into a photo booth and take a picture like old times. When they were about to take the picture, the flash of the photo booth camera transports them back in time, to the summer they met. This leaves the four girls confused and worried that they won't be able to get back to their future. They then have to work as a team and do everything exactly the same as they did once in order to get back to the lives they were living.