Following six different characters in four different stories: Dimas, a rude and selfish employee; Roby, a reckless and awkward nerd; Stefanny, a sweet and friendly Lost and Found clerk; Clara, a nonchalant career woman; Jevi, a gentle but strict train conductor; and Fajar, a caring and dedicated CSOT (Customer Service On Train) who comes from the outskirt of the city. All become interrelated after they each get involved in a mind boggling life-changing event related to the places where they usually board train for their daily activities' needs.

Loneliness, past trauma and debts keep Dina trapped in a complicated life. Then she found the Sleep Call activity - a happiness and an escape from the real world, but it leads to terror and disaster.