In the tranquil coastal town where Miranda pursued quiet career in social care, she relished the freedom and flexibility it granted her to nurture her two children, despite their significant age gap. However, when her teenager's inexplicable decline in energy coincides with an elderly client's enchantment with mysterious lights at sea, Miranda's world takes an unforeseen turn. The appearance of an unfamiliar boy on the beach not only saves Tanya from danger but also entangles Miranda in a web of suspicion that threatens to strip her of custody of her younger child. As conflicting family ties unravel, Miranda battles to reclaim her rightful authority in shaping her daughters' futures, grappling with the tumultuous forces that seek to tear her apart.