A3o - SB vs BB - Trips vs massiv turn overbet

I would open 5bb or if you dont want to then at least 4.
OTT I would fold. He only completes the blind preflop, so I might assume he is more of a passive player. Then when he starts the aggresion out of nowhere I'd give him some credit. Epecially when it's with these big sizings. Also you don't beat anything from his valuebetting range. And if he wanted to overbet bluff.. well he has so many overbet sizing options, so when he chooses the most expensive one and goes for stack I think it's less likely to be a bluff.

Also you invested only 0.20 so far, I think its easy to fold and avoid this kind of risky spots, where you only depend on him bluffing, where everything seems to tell me that he isnt even bluffing enough.

I do not mess around in spots like this, you invest only 1/10 of stack, this looks more like a bluff, fold is best imo.

Tough fold but you dont really beat anything here

weird line from the villain. If he has a value range then we beat nothing. But i think here is more the case of bluffing range. A lot of fish of these days do hate people who isolate their limps. So they do really crasy expecially on paired boards. Or the they limp raise with marginal hands and etc.