Framed in a country environment, the series 'El accidente' begins with a plane crash in which there are no survivors. Lucia (Inma Cuesta) knows that her husband José (Quim Gutiérrez) was taking that flight, so she starts a tough search. However, after examining the lists of embarked and deceased, she discovers that her husband, the man she loves and the father of her children, has left no trace. The disappearance of José leads Lucía to an arduous search for the truth, during which she will discover that her husband is perhaps not the person she believed.