Cat, lead singer of indie band Band Four, reunites with her estranged father King following the death of her mother. King only wishes to make amends and reunite his family introducing Cat to her half-sister Lok Yin. After years of no contact, the newly reunited family struggle to form a bond, however, they all soon realise they share a deep passion and love for music and performing.

Cat, lead singer of indie band Band Four, reunites with her estranged father King following the death of her mother. King only wishes to make amends and reunite his family introducing Cat to her half-sister Lok Yin. After years of no contact, the newly reunited family struggle to form a bond, however, they all soon realise they share a deep passion and love for music and performing.