Fisica O Quimica

Blanca tries on her wedding dress. The preparations for her wedding have already begun. Meanwhile, Thomas and Irene arrive from their vacations in the United States.

Gorka and Fer, determined to get some extra money, go to a fertility center to donate their sperm. Paula, meanwhile, tries to let only Yoli know that she is pregnant, and in no case does she intend to say who the father is.

Paula has an appointment for her first ultrasound. Everybody at the high school, teachers included, becomes abuzz with rumors and Martín decides to have a chat with her to make her consider all the options.

Cabano is not able to open himself up and tell Ruth about his serious illness. Gorka, for his part, insists Paula: he wants to be a father to the baby she is expecting, and have responsibilities in her care.

David and Fer hook up at David's house. At the most inopportune moment, David's parents appear. Vicente, the main shareholder of Zurbarán, asks Martín for an explanation for the article that Adolfo has written.

Roque opens his exhibition of paintings and, to his surprise, discovers Alma among the attendees. Yoli feels more and more sentimentally inclined towards Julio. She wants to hook up with him, but Quino gets in the way.

Alma promises Roque that if he hands over the sketch of the portrait he made of her, she will leave him alone. Yoli tries by all means to prevent Quino from seeing her with Julio, but she will fail in her goal.

Olimpia catches Gorka buying marijuana. Ruth and Paula are friends again. Ruth then discovers that Paula is beginning to have feelings for Gorka.

Blanca's parents appear at the worst moment: she and Martín have just broken up and their parents still don't know anything. Cabano receives terrible medical news.

Blanca loses the Literature exams before she can correct them. She does not know what to do so that Martín does not discover her mistake and thinks that she is careless.

Martín has a budget accounting problem. Olimpia is happy to see how the person who has replaced her in the management of the center goes through economic-financial difficulties.

Irene has to organize Blanca and Martín's joint bachelor party. Paula asks Gorka to accompany her to an ultrasound but does not tell her that it is the moment when they are going to tell her the sex of the baby.

The wedding of Martín and Blanca is imminent. Paula, meanwhile, is still angry with Gorka and Ruth, but she tries to make him see that the Zurbarán thug has changed, and that he will regret it if he does not give him a chance.

In the church, the ceremony is underway. Blanca, along with Martín and the priest at the altar, is ready to say "yes, I do." At that moment, out of breath, Berto appears at the door of the temple. Blanca looks at him, she doubts what to say…