Morph Planet

Wellings is a criminal on his way to the Penal Colony on Callisto. The ship is attacked and he is captured by the Centauri Independent Front. He offers to work with them and is accepted, but has secretly allied himself with a Centauran government agent in an attempt to discover the source of the CIF weaponry and funding.
Near to death after an attack, he is taken to an unknown alien planet where his life is saved by the vastly superior medical knowledge of the aliens. The necessary repairs to the structure of his DNA turns him into a morphoid—but there are severe side-effects.
Together with some friends, who were being transported with him, and an android from the alien planet, he sets out to help the alien race whose population is being depleted by the effects of a past collision between their planet and a massive asteroid
Can Wellings overcome the severe side-effects, help the aliens, defeat the military occupation of Centauri Prime and ultimately make a difference in the goal to unify Earth, Centauri Prime and the newly discovered Morph Planet.