"The Great Book of Amber" by Roger Zelazny follows the thrilling journey of Corwin, a prince of Amber, as he navigates a complex family feud that spans across multiple parallel worlds known as Shadows.

After waking up in a mental institution with no memory, Corwin gradually regains his identity and discovers that his father, Oberon, is the ruler of Amber, the true world from which all others derive. As Corwin sets out to claim his birthright, he realizes that his siblings, who possess various powers and abilities, are also vying for control of the throne.

In his quest for power and revenge, Corwin faces numerous challenges and battles against his treacherous siblings, including his sister Erica, who manipulates him with her enchanting ability to play the harp. Along the way, he discovers the Pattern, an ancient construct that grants access to infinite Shadow worlds, and must decipher its mysteries to gain an advantage.

As Corwin navigates the intricate politics and power struggles of the Amber Court, he uncovers secrets that unveil the true extent of his family's deception and betrayal. He encounters allies and enemies among the inhabitants of the Shadows, forming alliances that could alter the course of his destiny.

"The Great Book of Amber" is a gripping tale of family dynamics, political intrigue, and fantastical realms, as Corwin fights to reclaim the throne of Amber and unravel the mysteries of his past. With its richly imagined world and complex characters, this epic fantasy series captivates readers with its intricate plot twists and dynamic storytelling.

In a world where reality and illusion blend seamlessly, Corwin's journey through the Amber multiverse will challenge his beliefs, test his loyalties, and ultimately determine the fate of the entire kingdom.