  According to the theory of relativity and causality, a special type of
correlation beyond quantum mechanics is possible in principle under the name of
{\it non-local box}. The concept has been introduced from the principle of
non-locality which satisfies relativistic causality. In this paper, we show
that a correlation leading to the non-local box is possible to be derived
consistently if we release the one of major axioms in quantum mechanics, {\it
Born's rule}. This allows us to obtain a theory which in one end of the
spectrum agrees with the classical probability and in the other end, agrees
with the theory of non-local causality. At the same time, we argue that the
correlation lies in a space with special mathematical constraints such that a
physical realization of the correlation through a probability measure is not
possible in one direction of its limit and is possible in the other limit.

Quantum Physics