The final hour is approaching! There are only five hours left until the arrow of the God Killer pierces Athena's heart. Only the Pope, who sits atop the sanctuary, can save Athena. However, in order for Seiya and the other four Bronze Saints to reach the Pope's Chamber, they must break through the Twelve Palaces protected by the Golden Saints. There are five more palaces waiting for them to reach the Pope's Chamber. Can Seiya and his team defeat the powerful enemies that stand in their way and reach the Pope's Chamber, where the shocking truth is hidden?

The Pioneer Expedition was a mission to confront alien forces in space to prevent interplanetary war on Earth. It took place concurrently with the 2nd and 3rd Robotech wars. The expedition was led by Lisa Hayes aboard the SDF-3, which was launched in 2022 in search of the Robotech Masters. The mission soon became preoccupied with the liberation of worlds under the control of the Invid Regent. In June 2030, the final battle of the Second Robotech War caused a release of the spores of the Invid flower of life across Earth, which soon attracted the Invid. In 2031, the Invid, under the control of the Regis, invaded Earth. The United Earth Forces (including the elite Army of the Southern Cross) had been severely weakened by the Second Robotech War and were only able to offer limited resistance. In less than a week, the Invid seized control of the planet and began utilizing the human population for slave labour and scientific experiments. In 2038 and 2042, the REF sent the 10th and 21st Mars divisions to try to retake the planet, but both ended in complete failure. It was only with the third attempt in 2044, which involved all available REF forces (now equipped with new technology known as new Reflex Weapons and Shadow Techno Fighters obtained from the Haydonites) that the Invid were dislodged from Earth.

In the wake of scientific advancement, the once majestic mythological animals can't be compared to the olden days now. The mythological animal Sibuxiang received orders to descend to the mortal world and to help out other mythological animals in dire straits wandering the human world. In the secular world, he met his old colleague Pixiu in a tight spot, his drinking buddy Tuye down in his luck, and the gold and silver Jue brothers who were demoted to the mortal world... what kind of stories will happen between them?