"A Man Called Ove" by Fredrik Backman introduces Ove, a 59-year-old widower who is a strict curmudgeon with staunch principles and routines. After losing his job and the love of his life, Sonja, Ove's monotonous and melancholic life is turned upside down when a lively pregnant family moves in next door. The book is a heartwarming and sometimes heartbreaking story about the seemingly grumpy old man, exploring themes of friendship, loss, and the profound impact people have on one another. The novel, also adapted into the film "A Man Called Otto," is praised for its memorable characters and its ability to make readers laugh, smile, and cry.