Eva and Rubén split their time between 1957 and 1987 where the guardians of Chaos have hidden JJ.
But, this time, they are not the only kids jumping through time.
Tiago, a brilliant but rebellious classmate, has developed his own time-jumping technology. Soon, his spontaneous and disorganised travels clash with Eva and Ruben's plans. Although she doesn't like Tiago, Eva needs him to find a formula that will allow her to be with JJ, without breaking the fabric of time and causing chaos in the universe... Again.