Andor: Paradigm, by Heather Jarman, is the second story in the first volume of the Worlds of Deep Space Nine series, which is part of the Deep Space Nine Relaunch.
Within every federation and every empire, behind every hero and every villain, there are the worlds that define them. In the aftermath of Unity and in the daring tradition of Spock's World, The Final Reflection, and A Stitch in Time, the civilizations most closely tied to Star Trek: Deep Space Nine can now be experienced as never before...in tales both sweeping and intimate, reflective and prophetic, eerily familiar and utterly alien.
ANDOR: On the eve of a great celebration of their ancient past, the unusual and mysterious Andorians, a species with four sexes, must decide just how much they are willing to sacrifice in order to ensure their survival. Biological necessity clashes with personal ethics; cultural obligation vies with love -- and Ensign Thirishar ch'Thane returns home to the planet he forswore, to face not only the consequences of his choices, but a clandestine plan to alter the very nature of his kind.