The year is 1964. Kicki and Eva-Lena are teenage girls in a university town in Sweden. They are students at the respectable community girls' school, where the pupils are expected to always be decent and well-behaved. Because of this, the two girls try to hide what they are up to on Saturday nights.
Hop in Then! is a kind of time capsule which depicts Sweden during the People's Home" period, its youth culture, the psychodynamic aspects of maladaptive behaviour, yet also the attractive sides of the cruising life style. It is also about friendship, yearning and hope - the vain hope that covers pain and keeps striving alive.