Lillian has always thought, being Shawn Mendes's sister is going to be amazing. She was wrong. She gets sent hate and she barely has a social life. Any 15 year old should be able to have a social life. She starts to get depressed. Once Shawn finds out, he steps ahead and makes Lillian come to Magcon with him. She had to agree. She didn't think it would be fun, since she's scared all the fans would hate her. But Shawn said that he would always protect her. Since he vowed that, he's super protective. When Magcon starts, she gets introduced to all of the guys. But there is this one guy that try's to get her attention. Aaron Carpenter. Shawn, as always is protective. He strictly tells everyone hands off of Lillian. Everyone agreed, but some people didn't follow the rules. Lillian would keep telling Aaron that she has a boyfriend back home named Chase. But that doesn't stop Aaron.