In the present, in Spain, Miguel's mind, affected by a brain disease, seems cloistered in the past, in Argentina, in the seventies, when he risked his life for his ideals. He is obsessed with finding a woman named Diana. Mario, his son, who has been away from Miguel for a long time, now feels compelled to unravel the mystery of a name that, like a curse, pursues his father.
The night shift clerk at a sex hotel, suffering from narcolepsy, is faced with a night when things are unusually busy and housekeeping finds a gun in room 6.
Four friends swore to each other to achieve what they deserve in their lives like the sea, even surpassing family and social impositions. Their lives - supposedly comfortable and tranquil - are altered by different situations that put the oath of their oath.
