So Hee's phone could have information that could bring justice to the innocent and the guilty. In the previous episode, So Hee used the phone that contained evidence against Choi Tae Ho to threaten Jang Do Pal, the new Legend Entertainment CEO, to schedule a meeting with a movie director. Reporter Kim revealed that there was an ongoing relationship between So Hee and composer Shin Jae Hyun during the time when the composer was murdered. It was like So Hee would selfishly use this evidence regarding her deceased boyfriend to threaten people just for her the benefit of her own career.
The distinction between the protagonists and antagonists became clearer, and progress and development of the TV series were observed. Having Seo Jun Oh spring back into action towards the protagonist team made the other survivors from the island - Ha Ji Ah, Jung Ki Joon, and Tae Hang Ho - revive after all the lies and forced agreements with Tae Ho in order to survive. Other protagonists obviously include Prosecutor Yoon Tae Young, Seo Jun Oh, Ra Bong Hee, Byung Joo and the former CEO Hwang Jae Kook, who is bedridden. As always, Choi Tae Ho and Jang Do Pal are well-known for being the antagonist in the story as cited on Allkpop.
According to Dramabeans, The revelation of the main mysteries and the doubt in which side investigator Joo Hee Kyung and her assistant investigator Oh are on gave importance to the distinction between the good guys and the bad guys. In addition to an important part of the plot, a sneak peek of a disagreement between the two antagonists is shown.
By the end of episode 12, the search for the phone by the antagonists and protagonists was no use since the phone was now in the hands of Joo Hee Kyung. The plot won't progress as long as the phone won't stir up. Seo Jun Oh and Choi Tae Ho would still continue chasing each other in a 'Home Alone' style, which would make the drama have a slow and comedy-like impression.
Having this kind of flow from the plot, the netizen would want more from the drama. He/She is expecting more hidden elements and more force to the current mildness. The connection between the characters to the battle would be better and the comeback of Lee Yeol (played by EXO's Chanyeol) would also be appreciated.