A tragic accident is the starting point of Com si fos ahir. An accident, however, that has a positive effect: the reunion of some former high school classmates who, after twenty-five years, meet at the funeral of one of them.

With the new chapters, new characters also enter, such as Cristina (Carlota Olcina) and Quique (Biel Duran), parents of a child from Enric's class. Juli (Aleix Melé), teacher at a school in Sabadell. Gina (Meritxell Huertas) former classmate of Reina Sibil·la. Eulàlia (Vicenta Ndongo), a lonely high-level executive who will become good friends with Sílvia and Gemma. There will also be Carol Muakuku as Elisa, Hèctor's tutor; Laia Martí as Greta, a friend of Hèctor; Juli Fábregas as Ignasi, former partner of Reina Sibil·la and Xisco Segura as Barceló, a client of Miquel, among others.