Black Manta seeks revenge on Aquaman for his father's death. Wielding the Black Trident's power, he becomes a formidable foe. To defend Atlantis, Arthur (Aquaman) forges an alliance with his imprisoned brother. They must protect the kingdom.
An autistic boy and his father who returns from war with PTSD help each other find peace with the help of martial arts and music. As a man, Rob also learns to follow his heart when he finds a woman who loves him just as he is.