Toftlund-Holst, the tranquil place on the Baltic Sea, just before Christmas: everything could be so contemplative, but the mood in the Torkelsen house is cloudy. The lease of the restaurant "Four Mermaids" expires and the new owner Nick Winter does not want to extend it ...

Natalie (Anne-Sophie Briest) has found a job and a new love. She meets her 14-year-old Miriam, who risks being under the influence of Natalie's ex-pimp. Natalie and the computer nerd Sven research a child pornography ring.

Alice Cordes is to spend Christmas with her boyfriend Nicolas Huber's family in Upper Bavaria. Although the Hamburg chef no longer has parents herself, she initially reacts hesitantly to the invitation: a family celebration? But they haven't known each other that long. Unfortunately, their journey together comes to nothing: Nicolas is held up by work and has to join them. Alice only finds out about this at the train station in snowy Bavaria.

Attorney Caroline, the sensitive Judith, the housewife Eva and the affluent entrepreneur Estelle have been friends for 15 years. Once a year, the ladies go on a weekend break, but this time the trip is not a good star: After the death of her husband Arne wants the mourning Judith completed his pilgrimage started to Lourdes. As faithful friends, the three others join her. However, it does not take long for the strains of the tour to cause many a quarrel.

Angelika Romberg is a driving-instructor recently left by her husband. Currently she has two more problems. She does not know how to use her driving school's computer and she has an absolutely untalented client, Norbert Prechtel. It can be truly said that Norbert is a computer pro. Both dislike each other, but what they yet don't know is that they both are frequently chatting on the computer dialogue system Babylon as Roxanne and Alexander...

There is good reason for Sir Douglas Wonderly to summon the family and a lawyer to his stately home. He wants to announce a change in his will. At the same time, a dangerous mental patient escapes from a nearby psychiatric ward. Higgins and Lane are put on his trail. But the arrest of the psychopath proves to be extremely difficult. Shortly thereafter, a mysterious hooded man is on the loose in the castle. He frightens Sir Wonderly so much that the old man suffers a shock and falls into a coma. But that's not all: the will suddenly disappears and two sons are murdered. Sir John personally intervenes to solve the case with Higgins and Lane.