The series follows the partnership between two polar opposites—fun-loving Austin Moon, an extroverted musician/singer who can't stop getting into trouble; and serious Ally Dawson, a brilliant yet shy songwriter with an extreme case of stage fright—and their respective best friends, Dez and Trish. Unbeknownst to Ally, Austin and Dez "borrow" one of her songs from her songbook/journal/diary, record it, create a video, and post it on the Internet, after which Austin becomes an overnight sensation. When Trish convinces Ally to tell the world she wrote the song, Austin pleads with her to write another hit for him. Instead, the duo and their friends combine their talents to create a true musical tour-de-force.