As a lifestyle influencer, Emma is used to receiving weird messages. But the one from Andres stands out among the rest: apparently, her father and Emma's mother were friends at university, and Andres has found some very interesting letters from back then. In them, the young Emilio and Laura discuss their passion for physics, biology, genetics... what they don't talk about is how much they like each other, despite for Andres and Emma, that is more than clear.

As well as getting to know Andrés better, Laura and Emilio's letters will awaken a scientific interest in Emma that she thought was dormant.