Clunksy

As the Title says, I used an escape rope after beating Flannery, and completely skipped the May part to get the goggles that I was not aware of at the time. After doing some searching on the forums, I'm sure that this is what the issue is, as leaving the gym again doesn't trigger any cut scene, and I've already completed Hoenn region. Could you help me get the go goggles? thank you