Néstor's suspicions about Sophie grow, and Patricia helps him investigate her past. As the ER buckles, Pilar's decisions push Jésica to the brink.

Quique confronts Jon as patients arrive at the ER with similar symptoms, which the team fears may be linked. Lluís' new romantic status spreads fast.

Pilar and Nicolás clash over hospital management. As Patricia's election looms, Néstor digs deeper into Sophie's work. Rocío finds herself in trouble.