Ep 4. Birthmark

After defeating their latest foe, the Teen Titans begin to notice strange occurrences happening with their leader, Robin. Robin's behavior becomes erratic and he begins to have nightmares and hallucinations that threaten to consume him. The team becomes worried as Robin's mental state continues to deteriorate and they theorize that an external force is at work. As they investigate further, they discover a shocking secret about Robin's past that may explain his current state.

Meanwhile, a new villain named Brother Blood arises, with the goal of creating an army of superhumans to take over the world. The Titans must balance their efforts to help Robin with their duty to stop Brother Blood, who proves to be a formidable foe.

As Robin's mental state spirals out of control, the team races against time to try to uncover the truth behind his mysterious affliction. They must fight off Brother Blood and his minions while also dealing with the possibility that their leader may be lost to them forever.

As the episode reaches its climax, the truth behind Robin's birthmark is revealed, leading to a shocking revelation about his past that will forever change the Teen Titans' perceptions of their fearless leader. The team must band together to support Robin as he confronts this new reality while also facing their toughest challenge yet in the form of Brother Blood.

In the end, the Titans prove that their bond and loyalty to one another is stronger than any external threat or personal battle. They emerge stronger and more united than ever before, ready to face whatever challenges await them in the future.