The story begins in the summer of 1997, just before the arrival of the famous 12-meter flood wave flooding Wroclaw. - The residents of the "Home under Two Eagles" are grandma Zofia Szablewska, a woman full of energy, warmth and humor, her daughter Helena, a cool perfectionist, and Marianna, Zofia's beloved granddaughter, returning with her fiancé from a scholarship in the USA. The family drama begins when a flood wave floods the house, and at the same time grandma Zofia ends up in the hospital due to a stroke. An unfortunate coincidence leads Marianna to discover post-German traces in a house destroyed by the element, thanks to which she finds the diary of the first owner of "Home under Two Eagles", Lisa Weber. Marianna's learning of the history written on the cards takes the action of the series to 1918. In subsequent episodes, viewers will learn about the life of the then inhabitants of the tenement house and their neighbors.

The young mathematician David dedicated his whole life to the study of prime numbers. Getting to know his distant cousin, Joachim, causes the man to gradually reevaluate his priorities. This meeting will have a huge impact on both of them and will provoke a long discussion on the mysterious world order, the meaning of life and its passing.

A couple of young Ukrainians, Olena and Dima, is travelling to Sweden. Dima’s wallet with her passport gets stolen in a Polish train. A thief throws it through a window. They have to find it before a ferry leaves. The real reason of this travel reveals.