Some things that we should clear up are:

1. Option price in dependent on the IV.
2. IV is how volatile people expect the stock to be. (its an estimate of the future volatility)
3. The more volatile the stock, the higher the price of the call and put option. (Black scholes model)

This means that when IV goes up, the price of the call/put option should also go up, when the IV goes down, the price of the call/put options should also go down. IV does not have anything to do with upward/downward movement of the stock, it only tells you how volatile the price of the stock is.( The higher the volatility, the higher the range of the price movement)