Series creator Catharina Ledoboer worked closely with the Italian team during all aspects of production in order to suit the program for a European audience.

Eva soon falls in love with an Italian boy named JJ (Riccardo Frascari), who works as a lighting technician for a popular dance show called Club 57.

Eva also becomes friends with the show's lead performer, Amelia (Isabella Castillo), and provokes the ire of JJ's ex-girlfriend, Vero (Carolina Mestrovic).

They send an apprentice guardian named Aurek (Martín Barba) and his robotic assistant Droide (Jonathan Quintana) to catch the two siblings and stop their disruptions in the past.

Eva and Ruben evade their capture and eventually return to 2019, but there they find that their actions in the past have had a butterfly effect on the present: their parents are no longer together and their grandfather is a spiteful millionaire.

[3] At a 2017 meeting, Nickelodeon executives presented Rainbow's founder Iginio Straffi with potential follow-up projects to jointly produce.

[12] At the direction of Rainbow, series creator Catharina Ledoboer rewrote the show's original outline to portray the character JJ as a 1950s Italian immigrant.

"[12] Ledoboer stated that "from the cast, the writing, all the way to the songs, Rainbow had a very important influence on the series to ensure that their audience would like it, not only in Italy but in the wider European community.

[12] Filming continued for six months,[14] moving to Viacom's studio in Miami and involving an international cast of actors from the United States, Latin America, and Italy.

[23] With the exception of Evaluna Montaner and Sebastián Silva, most of the show's actors were given a list of 1950s films to study so that their characters would act like those from the time period.

[24] When Club 57 was replayed on Viacom's Telefe network, it became the highest-rated program in its timeslot from May to July 2019, reaching a total of 17.8 million viewers.

[25] According to data from IBOPE Media, the Nickelodeon broadcast of Club 57 ranked as the top-rated program in Argentina and Mexico among the target audience of viewers aged 4–11.

[5] On Nickelodeon's YouTube channel, music video clips from Club 57 achieved a combined total of over 30 million views, as of August 2019.

[27] In March 2019, Rainbow SpA announced a set of tie-in books based on the show,[28] including a 128-page novel written from Eva's point of view.