Marion Wienesse is on the coast when she witnesses an accident involving a kitesurfer, blown by a strong wind gust at an apartment block. Prime Minister Hans Kreuger present at the ceremony of the famous violinist David Stein, who stopped after the death of his wife, when he is called upon to go to the command center. In Belgium, the Prime Minister decided to evacuate parts of West Flanders in Ostend because the Spuikom threatens to overflow by an imminent storm. The Dutch government will not unlike himself can also send an opinion to the population about the danger of flooding. Robert Wienese having an affair with his female colleague and wants to divorce his wife, what does increase the tension in the family. In their home are from the Internet and television by storm. The command center is presented or the Randstad should or should not be evacuated for a possible flood. If the dikes break will occur namely an incalculable disaster in the Netherlands. However, the evacuation could also cause serious economic damage and end forming the coalition. In Rotterdam, the Belgian family Van Daele visited the father of the family in prison, where it apparently is for manslaughter. It's a few days before the birthday of their youngest daughter Femke. When the family must leave Ronnie is aggressive and he must go to the hole. The family goes back to Ostend, where just a huge evacuation underway. They decided anyway to go home because "grandma" is still there. Refuses to leave the house and go to a shelter.

A few days later the storm broke completely. Hans Kreuger calls his wife to let her go to safer places, although it is still not sure whether or not danger. His wife, however, decided against the protests of her husband in her father's retirement home to pick up and leave. A nurse takes a picture of it and put it on the Internet. There is so unintentionally panic throughout the Randstad and many people decide to leave. This causes long traffic jams on the roads. The family Wienesse decision to leave. Father Robert has witnessed how his mistress dies when she is swept away by a large road sign. Upon returning home his wife has already made all the suitcases and leave a little later. In Belgium has come the anniversary of Femke. Manu, a friend of the family, is also present. The two children Sonja absolutely want to go play outside. She wants to feel uncomfortable, but at the insistence of Manu and Bomma she admits. In the command center, the voltage now runs high. No one knows whether the levees will or will not keep. The Prime Minister sends the message to everyone to enter the height. This while thousands of people are still in the car, many meters below sea level.

Then the levees break through. The country is filled very quickly with water. In the command center, they can not help but watch helplessly. Rotterdam wants violinist Stein step out of life because he was lonely without his wife can not handle. He sits in the bath with a razor blade to cut his wrists. Just before he does this, the doorbell however. A little girl stands in the flooded streets of Rotterdam and asks if she can go inside. The old violinist takes her bewildered upstairs because he realizes that he can not leave her there. With Ronnie in solitary water now also runs inside. In Ostend Manu hear a huge wave arriving at the house and call the children inside. Femke however, does not listen and wants to take the boat that her father had given her for her birthday. It is much to the horror of everyone swept away by the rising water.

The coastal regions of Belgium and the Netherlands flows quickly now that the levees are broken. Thereby hitting the highways in the Netherlands blocked by the uncoordinated loophole toward higher ground.

The Wienesse family car gets stuck in a meadow 6 meters below NAP (Normal Amsterdam Level). When they have to end running on, the family becomes divided.

In a Rotterdam jail the water is already a man. While the prisoners revolt, Samir guard discovered that the Belgian Ronnie is still down in the hole ..

The first damage is recorded the day after the storm: the water is 2.5 meters high in the coastal area and tens of thousands of people are missing. While Prime Minister Kreuger is being evacuated by helicopter to Apeldoorn, those left behind in the disaster area must bring themselves to safety. The old Mr. Stein has offered shelter to young Kimmy, but their food and water are running out quickly. Later in prison, insurgents build a raft for their escape. Sonja and Manu go on a rubber boat in search of Femke, food and medicine. But in the extinct Oostende they find nothing but looters and corpses.

While Ronnie and Samir are still trying to escape the flooded Rotterdam on their raft, Prime Minister Kreuger is already working on the reconstruction. He travels to Brussels to negotiate the distribution of European emergency aid. The plan that his Belgian colleague Verbeke presents is completely wrong with him. The pressure on the coalition, and on Kreuger, is increasing. Meanwhile, Marion can barely cope with the uncertainty about the well-being of husband and daughter.

Both Ronnie and Samir are on their way to their families on dry land. Now that refugee relief is organized and family members find each other, a thank-you day is being held. Preparations are also in full swing on Willem and Madelief Wienesse's farm. But although the storm is long gone, Marion's relationship with Robert is still in difficult weather. In addition, tensions run high between Marion and Madelief. While Kreuger is on cardiac monitoring in the hospital, Deputy Prime Minister Wolbers is taking a different course than that set by Kreuger. She makes a decision about the future of the Netherlands with far-reaching consequences.

The water disappears and the future is slowly looked back: Ronnie wants to go abroad with his family and Stein goes in search of Kimmy with news about her mother. When Marion and Robert decide to stay together for their daughters, Naomi and Britt both indicate that they want to continue somewhere else. Now they are faced with the choice of what their future, together or alone, will look like. Kreuger is developing a revolutionary future plan for the Netherlands. Although he has many opponents, Kreuger is determined to follow his heart and intuition this time. Samir does not see a single future. It becomes increasingly clear to him: the prime minister is responsible for his loss.