'A Complete Unknown' explores the period from 1961-1965, when Dylan (Timothée Chalamet) moves to NYC from Minnesota, meets Woody Guthrie (Scoot McNairy) and Pete Seeger (Edward Norton), becomes part of the folk scene in Greenwich Village, encounters Joan Baez (Monica Barbaro) and has a relationship with Sylvie (Elle Fanning), an artist/activist whose beliefs motivate him to perform at the 1963 March on Washington and to pen "A Hard Rain's A-Gonna Fall" during the Cuban Missile Crisis. This period culminates with Dylan and his band performing with electric, not acoustic, instruments at the Newport Folk Festival in 1965, a controversial event many heralded as the bridge between traditional folk and rock music. Along the way, we see how he deals with his sudden fame, a development as unwanted as it was unexpected.