Books 1Q84: The Complete Trilogy  by Haruki Murakami (Author)

The story begins with Aomame, a fitness trainer and assassin, who finds herself in an alternate Tokyo where two moons are visible in the night sky instead of one. She uncovers that she has crossed into a different dimension after taking an emergency staircase off the highway during a traffic jam. Aomame is involved in mysterious and dangerous activities, including killing abusive men and working against a cult led by her father's enemy.

Meanwhile, Tengo, a quiet math teacher, becomes entangled in a literary mystery. He is asked to rewrite a manuscript by a teenage girl, Fuka-Eri, which turns out to be a true account of her life in a cult and her encounters with supernatural beings called "the Little People." Tengo's story gradually converges with Aomame’s as they both seek to understand and escape the alternate universe.

The third part introduces Ushikawa, a detective hired to find Aomame, adding another layer to the narrative involving cult power struggles and secretive agendas.

Themes and Conclusion

Throughout the trilogy, Murakami explores themes of reality versus illusion, love, fate, and the nature of how worlds can be interconnected and altered by individual choices. The narrative culminates with Aomame and Tengo reuniting at a mystical stairway that may lead them back to their original universe or an alternate reality, ending on an ambiguous but hopeful note that questions the true nature of their world.