NIR Emission lines from singly-ionized Iron, in particular [Fe II] $1.64{mu}m$, are good tracer of dense atomic gas in star-forming regions, around evolved stars, and in supernova remnants. We are imaging about 180 square degrees along the Galactic Plane ($6^{circ}$ < l < $65^{circ}$;$-1.5^{circ}$ < b < $+1.5^{circ}$) with the narrow band filter centered on the [Fe II] $1.64{mu}m$ line using WFCAM at UKIRT. The observations will complement the UWISH2 survey, which have imaged the same area with the narrow band filter centered on the molecular hydrogen 1-0 S(1) emission line at $2.12{mu}m$, and probe a dynamically active component of ISM. We present the goals and preliminary results of our survey.