Two parallel stories about people trapped in illogical endless spaces: two brothers and a detective locked on an infinite staircase, and a family locked on an infinite road... for over 35 years.

Arcelia takes care of her lifetime partner Lulu. Julian, a teenager exploring his identity, lives under the watch of his conservative mother. A sudden event will draw an unexpected path between the old couple and Julian.

Out of insecurity, when Marilú met Rafael online and he asked her to meet in person, she pretended to be her attractive friend Brenda.