A toddler is abandoned in her home, facing the terrifying unknown. Lily, a child of almost three, awakens to find herself utterly alone, her only companion a stuffed toy. Terrified of the dark and forbidden from opening the door to strangers, she is trapped by her circumstances. The narrative weaves together the plight of the isolated child with the concerns of a downstairs neighbor and a estranged grandmother, hinting at a complex family breakdown. Meanwhile, an unidentified woman lies in a coma, her subconscious filled with a child's cries, suggesting a deeper, hidden connection to Lily's predicament as time rapidly dwindles.

The description positions 'Lily Alone' as a gripping and heart-wrenching domestic drama, emphasizing its emotional impact and suspenseful plot. The narrative structure, which interweaves multiple viewpoints and a mystery surrounding a comatose woman, suggests a focus on psychological tension and the unraveling of secrets. The premise of a young child left alone is designed to evoke strong empathy and a sense of urgency in the reader. The book aims to explore themes of parental failure and the consequences of hidden truths, promising a compelling and emotional reading experience.