Since he was a child, Yohan Park's dream was to become a defense attorney, protecting the innocent when no one else would. However, when the rookie lawyer finally takes on his first case under the guidance of his mentor Orianna Buvelle, he realizes that the courtroom is a battlefield. In these fast paced trials, Yohan is forced to think outside the box to uncover the truth of the crimes that have taken place in order to prove the innocence of his clients. Sona Buvelle follows Yohan as he tackles cases to absolve the falsely accused of the charges they face. It will not be easy-standing in his path is the ruthless Daryll Suarez, a prosecutor who will stop at nothing to hand out guilty verdicts. With his back against the wall, the defense attorney must carefully examine both evidence and witness testimony, sifting through lies to solve the mystery behind each case. With a shout of "objection!," the battle in the courtroom begins!

Ever since he was young, Yohan has been living with his careless (but loving) father, Johnny, and his grandmother. When he turned 16 years old, his biological mother Alexandra re-married. Her new husband is a high ranking military official, Galford. Because of his mother's death, Galford son, Daryll, has been harboring a deep grudge towards his father. Due to the random hand of fate, the two step-brothers with wildly conflicting emotional backgrounds have been placed in the same class at a Pinagbuhatan high school, without knowing each other's background at first. With time, they slowly developed a special feeling, each in a different way. Their classmates, Ederick and Cedie, have been instrumental in the relationship.