A truck bed extension is configured to connect to a right striker post and a left striker post on a truck having a tail gate. The truck bed extension has a tail gate attachment plate, mechanically coupled to the tail gate. A back plate is rotationally connected to the tail gate attachment plate with a first back plate hinge assembly, a second back plate hinge assembly, a third back plate hinge assembly and a fourth back plate hinge assembly. Right and left plates are rotationally connected to the back plate with two plate hinge assemblies. A right plate bracket is attached to the right plate and configured to receive the right striker post. A left plate bracket is attached to the left plate and configured to receive the left striker post.