  We present a unified model of dark matter and dark energy. The dark matter
field is a modulus corresponding to a flat direction of supersymmetry, which
couples, in a hybrid type potential, with the dark energy field. The latter is
a light scalar, whose direction is stabilized by non-renormalizable terms. This
quintessence field is kept `locked' on top of a false vacuum due to the
coupling with the oscillating dark matter field. It is shown that the model can
satisfy the observations when we consider low-scale gauge-mediated
supersymmetry breaking. The necessary initial conditions are naturally attained
by the action of supergravity corrections on the potential, in the period
following the end of primordial inflation.
