A rock star that never was is at the heart of Steven McKenna’s lived-in character study, which draws inspiration from the orbit of the director’s musician father, a member of the Dublin band Shaine whose minor hit “Dreamtown” affords the film its title. Leather-clad barfly Mickey Richards (Anthony Murphy) is an over-the-hill rocker still clinging to his younger self and bygone brushes with near-fame. His adult son Alan (Cian Hyland), meanwhile, has staked out his own career in music, a point of tension in the already tarnished relationship between the two. Desperate for connection but unwilling to cede his dreams to the next generation, Mickey must face up to his failures—as a musician, as a father—if he wants to keep Alan in his life.