Valle attends an interview at the Sanctuary, where she is told that she needs to improve the gestation incubators for artificial intelligences in simulated bodies of pregnant women, a project that defies the law and seeks to eradicate side effects in the population. Although hesitant, Valle decides to accept the position after consulting with an artificial intelligence that recreates her deceased father.

In a flashback, Valle and her friends get into trouble when they activate an old train, leading the authorities to move them to an upper sector. In the present, the government decides to interrupt the Sanctuary project and extract the babies; Valle tries to save Pilar and Rocio, but Rocio is disconnected while Valle and Pilar manage to escape with the unexpected help of Victor.