It all started on Saturday, an ordinary Californian Saturday, when Julia woke up and learned that something incomprehensible was happening to the Earth. The days and nights are getting longer. Gravity changes. Birds behave strangely. The tides have gone crazy... The world is changing rapidly and irreversibly. What should a girl do if the past becomes big, and the future shrinks and shrinks, soon to turn into nothing... if the day grows into weeks and it is not clear which of them is more dangerous - weeks of light or weeks darkness... if your personal world is collapsing, the gap between people who were close to you yesterday is growing, and the feeling of loneliness is gaining strength? Should you come to terms with it or, in spite of everything, believe that nothing in the world is final?