In 2250, the USS Enterprise observed pulsations and deadly radiation from Draxis II. During the survey, a fleet of unidentified alien starships approached. To protect them from a dangerous solar flare, First Officer Christopher Pike tried to use a tractor beam to keep the ships at bay. However, they broke free and retreated out of the system, leaving their identity a mystery. Pike described the incident in detail in a handwritten journal.
In 2264, shortly after James T. Kirk assumed command of the Enterprise, an unknown ship appeared and kidnapped Pike. Kirk found similarities between that ship and the 2250 encounter described in Pike's journal. The Enterprise arrived at Draxis II to discover the star and one planet covered by an array of shielded Tralmanii ships, two hours prior to the star becoming a nova. Spock mind melded with a Tralmanii to learn their language. They required exposure to certain levels of radiation from Draxis II to survive, and were able to succeed with help from Spock and Leonard McCoy Their fleet and the Enterprise departed the system together as Draxis II went nova. (TOS comic: "All Those Years Ago...")
- Draxis II was depicted yellow throughout the story itself. On the cover, it was colored red with a yellow planet.