It is a sequel to the teen drama series Física o Química (2008–2011), focusing on the lives of the original characters a decade after as they meet up again for the wedding of Yoli.

[10][11] Some notable characters from the original series who failed to made an onscreen appearance include Ruth (Úrsula Corberó) and Blanca (Cecilia Freire).

[13] The series arrived on the platform with a great controversy since Carlos Montero, one of the creators of the original fiction, was not taken into account to take charge of this sequel.

", The writer wrote on his Twitter profile on 22 April 2020, after hearing the news that Antena 3's fiction was returning in the form of a special to the Atresmedia platform.

2020, Montse García, fiction director of Atresmedia TV, assured that Montero could not be in the project due to "exclusivity contract issues" with Netflix, a platform to which he joined after the success of another of his creations, Elite.