As a spin-off of "NCIS", "NCIS: Los Angeles" has now become a standout show. Exciting explosions and the battle between light and darkness are the main themes of the show. The loving and humorous dialogues between the characters also add a touch of brilliance to the plot, and have even surpassed the plot to become the most talked-about part of the audience. At the end of the third season, with the ultimate boss Chameleon surfacing, the confrontation between the two sides has become more and more intense. Agents Mike Renko and Hunter have died one after another, Hetty has submitted her resignation again, and Callen's (seemingly) impulsive behavior has led to his arrest. What will be the outcome of this team? Or is this actually another puzzle led by Hetty to lure the enemy?