It stars Cristina Marcos, Candela Peña, Ernesto Alterio, María Pujalte and Ginés García Millán.

Set in Madrid, focusing on the psychological developments and casual relationships through the urban routine of a group of young people,[2] and bringing in elements of costumbrismo mixed with metaphors of a "self-absorbed" social environment,[3] the plot tracks the lives of three sleepless people, Evan, Alba and Juan (and their partners) during the hot summer.

[4][5] Adrián is with Alba (a mother who has just given birth) whereas Juan is worried by his future with his would-be wife Isabel.

[6][2] The screenplay is the result of the mashup of three different screenplays (two of them jointly worked by Chus Gutiérrez and Juan Flahn [es] and a third one in which Fernando León de Aranoa also participated).

[4][10] Augusto Martínez Torres of El País assessed the film to be a "fun comedy that works perfectly".