I know you have to have a strong suspension of disbelief when watching k-dramas, but the plot-holes were too much to ignore.

1. What was the point of creating and designing multiple traps to get into the vault while on the other side there is just a freaking door with a key? What is the point for the traps, and for whom.
Also the villain could nor enter the vault because he does not have the key to the door? Lmao.

2. Why tf would the villain kill the sister and then go through all the trouble to hire an actor and deepfake shit? Wouldn't it be easier to just keep her alive and use that as a real leverage.

3. In almost all crime dramas there is one guy (usually a college kid) who can hack into everything, but that women seemingly made all the cool gadgets by herself. Tony Stark wants to know her address.

4. The main villain was borderline comical. They made the male lead a bumbling idiot. The acting was subpar, with poorly written lines. Overall seemed like they were on a low budget. There are better dramas to watch in this genre, don't bother.