The 30th century’s hottest team nears the breaking point! Layer upon layer of intrigue is revealed as the Legion’s two factions are pushed to the brink, while Cosmic Boy is faced with a deadly decision that could change the face of his team forever.

Cosmic Boy is ready to go home and take a break from the Legion. However, the Legion needs his help as they confront Terra Firma, a terrorist group, on a distant world. Invisible Kid arrives to the transportation terminal and reconfigures Cosmic Boy's destination so that he arrives on the planet where the Legion of Super-Heroes are. At first angry, Cosmic Boy knows that this is his true calling and joins the fray.