Jan, an office girl, becomes the guardian of her brother, Bank, when he moves to study in Bangkok. Bank is obsessed with the social media world. He chats all the time and socializes with his friends from these social networks. He becomes close to Fy, a drug-dealer. One day Bank gets arrested by the police when he has a small talk with Fy. Jan bails Bank out with the support of Captain Best who falls in love with Jan. Bank is banned from using his smartphone. Nevertheless, when Bank goes to see aunty Orn, he meets aunty Orn’s son, Keng, who just moved from Chiangmai to study in Bangkok. Bank likes Keng as he is very funny. People usually mistakes Keng’s caprice as flirt, including Noon, Keng’s online ardent fan. Bank and Noon become rivals to win Keng’s heart, but what would Bank do without his smartphone?