Forty years ago, while searching for his place in the world, Nissim Kahlon (67) made his home in a limestone cliff under the Apollonia National Park, north of the Herzliya coast. Amidst the sound of the waves and the fragile limestone mountain, he dug a cave to live in, to shield him from the heat and cold. For years he lived without electricity or running water. Today the “home” that he built out of anything and everything – rocks, trash, sand – contains countless caves and tunnels, and Nissim insists on continuing to work on it every day. His work never ends. The sea, which he loves dearly, constantly gnaws at his house, threatening his life’s work. The unending building also takes a toll – his body aches and betrays him.

After years of estrangement, Nissim suggests that his son, Moshe (18), who was born in the cave and will soon join the military, move in with him and inherit the cave. Together they work to dig out the cave in which he will live in. Through their hard work, a complex relationship between father and son is revealed.