Taking his father’s words to heart, Apollo uses his unexplainable strength for good. One day, their simple life takes a dark turn following a violent encounter with drug addicts. Apollo later receives an enticing offer from a total stranger.

Apollo gets forced to choose between love and duty as he receives his first mission as a top secret agent. Amid his preparations, his strength and principles are put to the test when a group of unknown men abducts him.

As part of his mission to bring down Tatsulok, Apollo throws his promising life away and enters jail to penetrate the notorious drug syndicate. Following her painful reunion with Apollo, Cassandra receives unexpected houseguests.

Apollo manages to worm his way into Tatsulok following his escape from prison. Not wanting her sister to experience what she went through, Cassandra takes Lia in when their mother decides to leave again.

Apollo foils Sol's mission. Soon, the secret agent finds an opportunity to work his way up when the unsuspecting Janus chooses him to participate in combat and appease their enraged bosses.

Apollo displays his impressive fighting skills during the combat, capturing the Engineer’s interest and getting himself the official Tatsulok mark. The attention Apollo is receiving, however, sparks jealousy among one of the syndicate members.

Apollo rises through the ranks but at the expense of his personal life as Cassandra tries to start anew without him. The dela Torre's celebration of success turns into Priam's worst nightmare when the undercover agent strikes against them.

As the word gets around that the Engineer is dead, Priam lets the CIB raid his businesses easily while he plans his next move. Believing that his mission is finally over, Apollo goes back to Cassandra, asking to give their love another chance.

As Apollo begins planning for their future together, Cassandra volunteers to join him in his meeting with Helen. However, all hell breaks loose when a vengeful Priam decides to strike back following his son's death.

Tatsulok wreaks havoc as the grieving Priam exacts ruthless revenge for Jason's demise. To Apollo's horror, Cassandra gets caught in the chaos, giving the undercover agent another reason to take down the syndicate.