The episode centers on several newcomers whose arrival disrupts the status quo:
The tension escalates when a terrified man (later revealed to have a connection to the school) bangs on the main door pleading for help. His pleas are ignored by Jacinta. Shortly after, the man is brutally murdered by a shadowy figure with a mechanical hook. The episode concludes with the revelation that the school is not just an educational institution but a place harboring dark secrets. el internado laguna negra 1x01 top