  We present the integral field spectroscopic observations of ionized gas
(H$\alpha$ and [{\ion{N}{II}}]) using the PCWI, along with deep CO(2-1)
observations by the $^\backprime\bar{\rm U}^\backprime\bar{\rm u}$ receiver on
JCMT for AGC 102004. The velocity field of H$\alpha$ shows an anomalous
distribution in the North-Western (NW) disk. The H$\alpha$ spectrum is
well-fitted by two Gaussian components, and the weak Gaussian component is
dominated by the anomalous H$\alpha$ in the NW disk. The Gaussian fit center of
H$\alpha$ emission is offset by +24.2 km s$^{-1}$ from the systemic velocity
obtained from the HI emission. We derive the gas-phase metallicity,
12+log(O/H), using [{\ion{N}{II}}]$\lambda$6583/H$\alpha$ ratio as a proxy. The
mean value of 12+log(O/H) is 8.30 $\pm$ 0.19 over the whole galaxy. The
metallicity in the outer disk is lower than the detection limit of 7.72,
indicating the metallicity gradient exists in AGC 102004. We speculate a
minor/mini-merger event could have happened to the NW disk. CO(2-1) emission
has non-detection in AGC 102004, reaching a noise level of 0.33 mK smoothed to
30 km s$^{-1}$. The upper limit of molecular gas mass in AGC 102004 is 2.1
$\times$ 10$^7$ M$\odot$ with X$_{\rm CO}$ = 3.02$\times$10$^{20}$ cm$^{-2}$ (K
km s$^{-1}$)$^{-1}$. The M$_{\rm H_2}$/M$^{\rm corr}_{\rm HI}$ of AGC 102004 is
lower than 0.0037 and lower than that of normal galaxies.
