Theresa Joanne (TJ to her mates) is having a difficult year. First her best friend moves away and then classmate Wendy appears to have it in for her. Plus there's the problem with boys. They treat her like a mate and never seem to notice that she's a girl. When Lucy befriends TJ things start to look up. But will Nesta and Izzie also accept her? Will they let her into the world of sleepovers, secrets, laughter and advice? Can they help TJ to discover her real potential?