The first episode tells the story of the arduous recruitment process to become a paramedic in Mexico. Damian, the squad chief, will have to select the bravest candidates to join the team.

The paramedics face different challenges in their day to day life, during that time, they must develop empathy with the patients in order for them to accept treatment and improve their lives.

The paramedics find themselves in complicated personal situations and during their most difficult shifts many of them face life and death situations, during one of the most celebrated dates in Mexico, September 15th, the independence day.

Being the celebration of the 100 patient in one of the units, the paramedics face one of the major problems of the Red Cross, that only 15% of the inbound calls are actually the truth, and the rest of them are false.

In Mexico City the traffic road tends to be an impediment to paramedics, to avoid this, a new project is presented. Meanwhile, they must face a situation of faith.

One of the paramedics faces an experience from his past, when his team attends a distress call which brings him bad memories.

The paramedics are facing 2 cases where discretion and secrets can lead to the death of their patients.

The paramedics respond to the call from two separate couples, one of them in danger of death and the other one coping with the sharp reality of old age.

An insecure freshman girl and a proud veteran, join forces to save a child in danger. Mean while, a few cases change the way some paramedics view life, and not necessarily for the good...Lessons are learn.

It is the day of the dead and the all the staff remember their loved ones, while they try to save as many as they can, however, this date brings the typical jokes and ghosts stories, causing problems.

The paramedics attend rare and strange situations while some suffer from decisions taken in the past, just when things are about to finish, the dreaded code 100 is present.

The paramedics are faced with situations related with some of the worst themes in life, the organized crime and the risk of crossing the border of legally. Whiles some members take decisions that will affect their lives drastically.

The lack of communication makes a case difficult , while another one is between life and death, and depends on a rookie to save it, finally, organized crime presents an extremely risky and difficult situation for some paramedics.

After a difficult night, the paramedics decide to perform 15 services, facing the death of one of their colleagues, an old acquaintance, a veteran returns to support the central Unit.

A team faces the school yard bulling while learning to overcome a difficult situation, a pregnancy gets complicated, alcoholism affects a member of the team and they learn how difficult is to say goodbye.

Negligent, labor accidents and domestic violence are just some of the cases paramedics face, a few of them deal with new responsibilities and with the new arrival of a member that can change the manner in which things are done.

A new generation of paramedics starts their training, while one of the new members is received with hostility by his peers, she shows her knowledge by saving all their lives.

Personal situations are affecting the team; while students are not committed they can fail. Jamie and Salvador have decided to take control of their own lives.

Students learn to prepare physically and mentally for dealing with emergencies and learn which injury to prioritize, by not following orders and heeding protocols one member puts the whole team at risk, and accident changes the team.

The paramedics head out on their rounds without knowing what they will face by helping other people, in the meantime while others are preoccupied a multiple accident occurs and a situation provokes one of the paramedic to enter into conflict.

The students continue with their preparation, the preoccupations of the team come to an end when they received help from an unexpected member. In secrete one of the other members is faced with a difficult situation. A workplace rivalry is present.

Two projects are presented to the board. In the meantime the students are anxious and fearful waiting for their result. Two cases in sites with difficult access turn up. The families are reunited.

The paramedics send gifts to a coworker. Natalia makes use of her new ability; meanwhile one paramedic facing an overload of work is presented with a difficult case. A situation inside the storeroom arises suspicion.

The students receive their new instructor; a paramedic confronts her past to move forward, la situation in the storeroom is resolved leaving cracks and broken trust within the team.

The student face their first real situation as they witness justice being taken into ones hand and they show what they are really made of. A natural disaster puts everyone on alert without suspecting that some of them may be in danger.