It stars Antonio Resines, Gracia Olayo, Clara Lago, and Alberto Olmo.

Affected by the empty nest syndrome, Bego and Agustín, a retired couple living in a village in the sierra of Madrid, feign to have won the lottery to draw the attention of their children, Miguel and Carla.

Written by Susan Béjar and Ángela Armero [es], the screenplay of Un lío de millones is based on the French film Mes très chers enfants [fr], written and directed by Alexandra Leclère.

[3] Originally known under the working title of Mis hijos valen oro,[4] the film was produced by Tornasol Media and Mis hijos valen oro AIE, and it had the association of Sony Pictures Entertainment Iberia and the participation of RTVE and Movistar Plus+.

[5] Distributed by Sony Pictures, the film is scheduled to be released theatrically in Spain on 20 December 2024.