Based on true events, the story starts with a shocking leak of over three thousand photos of part-time girlfriends (PTGF). Ka Chun, an ordinary white-collar worker, seeks relationships with PTGF and soon becomes a master on YouTube. He is admired by thousands of netizens who give him the nickname "Score of 100." But when Ka Chun discovers that the girl, Tsz Shun, he has a crush on is also a part-time girlfriend, how will they overcome the hardship and survive in the cruel world of the Internet?