A woman and her sister confront a young man who followed her home, accusing him of molesting her in the restroom. He insists it’s a misunderstanding and, under threat of police, admits the truth: he’s a cultivator who just traveled back from outside the solar system through a space-time vortex and accidentally landed in the restroom. The sister calls him crazy but demands proof. She challenges him to use magic to lift a sofa without touching it. He agrees, saying "Piece of cake," and prepares the spell — the test and its result remain unresolved.