Watch Series: 21 Again Released in (2019) - Season 1 produced by UK, USA, The TV Series categorized in Documentary, Reality-TV, and content rating Documentary, Reality-TV with duration 42 min broadcasted as these networks BBC Three, Streamed at Putlocker Five daughters send their mums undercover as 21-year-olds. From dating to working to activism, the mums will be immersed in their world. Can the mums pull off being 21 Again? - Season 1