A socially awkward, environmentally conscious teenager named AJ is dragged to a coastal holiday park by her painfully 'normal' family, where she becomes unexpectedly captivated by a chlorine smelling, sun-loving lifeguard named Isla.

Five years after the events of Mamma Mia! (2008), Sophie prepares for the grand reopening of the Hotel Bella Donna as she learns more about her mother's past.

Three British teenage girls go on a rites-of-passage holiday - drinking, clubbing and hooking up, in what should be the best summer of their lives.