The mysterious giant mecha—"Tianlang" descends from the sky. Three Earth teenagers accidentally enter the mecha, where they meet the Sirius beings who control "Tianlang" and join forces with them to fight against an evil alien force. A tense, thrilling, and perilous battle is about to begin. Can the Sirius beings, with the help of the Earth teenagers, defeat the evil alien force and return to Sirius? What dazzling transformations will "Tianlang" undergo as its super energy grows? All will be revealed in "Tianlang War Chronicles."