Understanding Huge Volume and Candlestick pattern

Hi.
I'm really baffled by this sudden increase in volume one day in this stock I am following for a while and trying to understand the candlestick pattern here.
Why the price isn't moving up or is it being held or getting distributed.
Experts please help me understand these patterns. I was going to invest in the stock based on FA but this huge volume on that day stopped me before understanding what's going on.
Thanks