The blind former ski elector, Yu Fei (starring Sylvain Porter), went to a friend's mansion one day to help take care of the belongings of the opposite party. Through the "watching me" APP downloaded on her mobile phone, she asked for oral assistance from strangers all over the country to give her a preliminary understanding of this unfamiliar environment. But a few nights later, she found three gangsters breaking into the mansion. Faced with the threat of her own life, Feifei once again went through this APP to find the ex-army woman Lilly, who had never met before (played by Cecilia Park Kennedy). Can the unseen Fei Fei succeed in withstanding this group of invaders and survive in the end because of profitable assistance?