Pheremones were the body and soul of Alpha and Omegas. It is what helps them find mates. The body naturally releases the pheremones in the day to day, and even stronger during heats and ruts.
Ghost and Soap had long since given up on finding an Omega mate. Both Alphas find their needs through each other. They were content and happy
Until the new medic arrives on base, and the two Alphas immediately feel the bond pulling at them. Drawn to their presence, their pheremones consumed the two males, but instead of embracing them as nature intended, they rejected the Omega. Emotionally and physically, relying on each other like always.
But how long can they keep their instincts at bay. After all, Alphas are meant to take Omegas as mates, and both Ghost and Soap, despite their resolve, are constantly drawn to the Omega.