Vector equation of the plane to which the vector $\overline{\mathrm{i}}+\overline{\mathrm{j}}$ is normal, and which contains the line $\overline{\mathrm{r}} = \overline{\mathrm{i}}+\overline{\mathrm{j}} + \overline{\mathrm{k}}+\mathrm{t}(\overline{\mathrm{i}}-\overline{\mathrm{j}}-\overline{\mathrm{k}})$ is