Every night, Omar dreams of getting lost - not the scary kind of lost, but the sort that hums quietly, as if it's trying to show him something.When he and his mum move to a new town, Omar finds the world louder, faster, and more confusing than before.Then, one afternoon, under the willow tree behind St. Luke's Primary, he hears it - a sound deep in the ground, humming like a heartbeat.Soon, silver lines begin to appear in puddles, on windows, and even in his dreams -connecting him to Tilly, to the other children, and to something vast and remembering beneath his feet.As the map spreads through school and beyond, Omar must follow its shifting paths of light to discover what lies under the noise -a river that knows their names, and a story that began long before he arrived.A gentle, magical tale about belonging, wonder, and the quiet threads that tie us all together - even when we feel most alone.