Nancy Drew is looking forward to a fun-filled vacation at Shadow Ranch in Arizona, but she soon finds herself involved in solving a baffling mystery surrounding a mistreated child.
With her chums, Bess Marvin and George Fayne and their cousin Alice Regor, the girls investigate the plight of young Lucy Brown who lives with Martha Frank, a mean-spirited woman.
Nancy also determines to help Alice who has a mystery of her own – her father went missing years ago.