Twin siblings Aether and Lumine from another world travel through the universe, until an unknown god blocks their path. Aether's sister gets captured. Aether's power to travel is sealed, leaving him stranded on Teyvat. He saves Paimon by fishing her out of the water and she accompanies him as his new travel companion. Together they set out on a journey to find The Seven and reunite with his lost sister. A lively and amusing duo, the levelheaded Aether and bubbly Paimon!