give me a 2 paragraph summary of uncle toms cabin based off chapters 20-27 in the book

In chapters 20-27 of Uncle Tom's Cabin, the narrative shifts to the Shelby plantation where Tom's absence is deeply felt. Young George Shelby misses Tom, who was like a father figure to him. Meanwhile, Tom is sold to the cruel slave owner, Simon Legree. Legree is a harsh and brutal man who treats his slaves with extreme cruelty. Tom maintains his faith and integrity despite the harsh conditions and Legree's cruel treatment. He even manages to make a positive impact on some of the other slaves on the plantation.

In these chapters, we also meet Cassy, another of Legree's slaves. Cassy is a woman of mixed race who has been hardened by the harsh realities of slavery. She has been separated from her children and has suffered greatly under Legree's ownership. Despite her circumstances, Cassy is intelligent and resourceful. She forms a plan to escape with Emmeline, another slave girl. Tom, despite knowing the potential consequences, decides to help them. These chapters highlight the brutal realities of slavery while also showcasing the strength and resilience of the human spirit.