Lin and Bank are taking the STIC exam in Australia. However, when it's time for Bank to send his part of answers back to Thailand, Bank threatens not to do so unless Pat and Grace transfer him another 500,000 baht. With time closing in on them, this mission runs into a bigger obstacle which becomes a turning point for both Lin's and Bank's life. 

Lin unwillingly agrees to join and helps plan for this national level exam-cheating mission. Having Ms Music as their agent to find over 800 clients, this mission and their plan are much riskier since it involves more than just the four of them, unlike what they have been doing before.