Sometimes the apartment is completely quiet and gloomy - as if it were all foggy. On such days, Mom can't get out of bed. Naturally, Pit, as the big brother, is there for Lina! And then there are the glittering days - on those days, Mom wants to do and buy a lot. She spoils and treats Pit and Lina. The entire living room can even be filled with potted plants. On those days, Dad gets really angry. He worries because Mom buys so much. Luckily, there's Uncle Jan. He knows Mom and explains to Pit and Lina what's going on with her. A doctor can ultimately help Mom. And the potted plants? They go to the neighbors - that's clear! The book vividly and lovingly describes the emotional rollercoaster of the mother's bipolar disorder from the perspective of two siblings. The children's feelings, as well as their sense of togetherness, are portrayed with sensitivity.