Diane Hart reflects on her life—a story of love, loss, and hope. After her husband Phil dies in a mining accident, Diane is left to raise their three children alone. Grief fractures the family, and tragedy strikes again when young Caleb disappears without a trace. Diane clings to a green gem necklace he gave her, believing it connects to him. Caleb, meanwhile, embarks on a spiritual journey through The Kingdom, witnessing miracles. Years later, detectives reopen his case, linking it to a string of East Coast kidnappings. As courtroom drama unfolds, Diane and her daughters confront their pain, seek truth, and find the strength to hope again. Bound by love, they face the unknown together, still asking: Where are you, Caleb?