Modern girl Lin Qingtang enters a holographic game to raise medical fees for her grandmother, only to find herself trapped in an ancient exile dungeon. At the start, her entire family is exiled to a barren island, where her grandmother is critically ill, local bullies exploit them, and toxic relatives circle around. Armed with a beachcombing system, she saves her grandmother and rallies public support. She channels water for reclamation, builds stone houses, makes salt, and trades, outsmarts local bullies, drives away corrupted relatives, and completely annihilates giant bandits with a pocket formation. The barren island turns into a prosperous port village, winning her grandmother's approval, as Shen Du steps onto the island and uncovers his life background.