BTS 4th Muster: Happy Ever After was BTS's 4th Muster fan club event. It took place from January 13, 2018 to January 14, 2018 in Seoul, South Korea.

Cast:RM, Jin, SUGA, j-hope, Jimin, V,

Genre:Music, Documentary,

country:South Korea,

Production:HYBE, Big Hit Entertainment,