After the events of Dagvaktin, (The Day Shift), Georg and Daniel begin their prison sentences. Meanwhile Olafur has a new job as an property realtor, but once again he's struggling for money.

Daniel struggles to adapt to prison life and soon finds himself in trouble with the top dog, and section leader Ingva. Georg, however sees that he is better placed to take control as section leader.

Ólafur enters into a car deal that's too good to be true. Daniel has to deal with Ingva's constant bullying, and Georg tries to find a way to get out of jail.

Re-captured by the police Georg is returned to prison, this time bringing Ólafur with him. Now reunited with his friends Ólafur discovers for him at least, prison life isn't that bad.

Georg enters a fight with the prison authorities to create a dedicated library. Daniel is forced to violate his conscience in order to pay back his debt to Ingva and Ólafur, enjoying the perks of prison life soon makes a new and powerful friend.

After the hunger strike Georg finally gets his dedicated library and enrols the entire prison to help with its construction. Daniel goes out on a farm trip while Ólafur is reunited with his father again.

It's Christmas and Ólafur takes on the role of Santa to celebrate the Christmas, Georg feels left out. Daniel nervously prepares for his marriage to Ylfa.

Ómissandi heimildar- og skemmtiþáttur um tilurð Næturvaktar, Dagvaktar og Fangavaktar. Í þættinum skyggnumst við á bak við tjöldin, viðtöl við helstu leikara, leikstjóra, framleiðanda og síðast en ekki síst við fjöldamarga gestaleikara og þekktar persónur úr mannlífinu sem með einum eða öðrum hætti hafa komið að þessum vinsælu þáttum.

Sérstakur þáttur af Fangavaktinni sem inniheldur brot af því besta úr þáttaröðinni.