The novel is a sweeping historical saga that follows four generations of a Korean family from the early 20th century to the 1980s, beginning in Japanese-occupied Korea and moving to Japan. It explores the family's struggles and triumphs against the backdrop of cultural and social discrimination. The game of Pachinko, a popular Japanese arcade game, serves as a metaphor for the randomness and challenges of life that the characters face, particularly in the context of their immigrant status and the enduring quest for identity, acceptance, and success in a foreign land. Through the family's experiences, the narrative delves into themes of love, sacrifice, ambition, and loyalty, painting a vivid portrait of an often invisible segment of Japanese society.

This novel intricately weaves together the lives of two women, separated by a century, who find themselves connected through a shared history and a mysterious collection of letters and journals. Set against the rich backdrop of late 19th and 20th-century Egypt, the story explores themes of love, politics, and the enduring impact of colonialism. As the modern-day protagonist delves into the past, she uncovers a passionate love affair between her ancestor, an Englishwoman, and an Egyptian nationalist. This discovery leads her on a journey of self-discovery and a deeper understanding of her cultural heritage, revealing the complexities of identity, the power of love, and the intricate map of human connections that transcends time and place.