My concept of symbiosis deals with something deeper. Underneath the surface, our personalities represent the power struggles going on deep within us between the id, ego and super ego. Our personalities represent a drama of sorts, acted out in our minds full of desire, power, control, and freedom. With so many competing forces, it is easy to see how conflict might arise.
Id, The seat of our impulses.
Ego, Negotiates with the id, pleases the superego
Superego, Keeps us on the straight and narrow
The series follows the relationship between the three and the outcome.