  We study an analytical solution to the Einstein's equations in
2+1-dimensions. The space-time is dynamical and has a line symmetry. The matter
content is a minimally coupled, massless, scalar field. Depending on the value
of certain parameters, this solution represents three distinct space-times. The
first one is flat space-time. Then, we have a big bang model with a negative
curvature scalar and a real scalar field. The last case is a big bang model
with event horizons where the curvature scalar vanishes and the scalar field
changes from real to purely imaginary.
