Lilly Avery, does that sound familiar? Yup you guessed it, it's Jack Avery's little sister. She was just sixteen and she was a youtuber but wanted to be a singer like her brother and his band Why Don't We. So what else would she do but follow in his footsteps and move to L.A to persue her passion. But what happens when stuff goes down with her and one of Jack's bandmates and best friends?