Thaddeus finds himself in a world of cultivation, the only issue is he's wasn't the person that was supposed to be transmitigated. No, he was the hero's friend, and now he's stuck in a deadly world without any plot armor and only his wits about him. All he can do is strategize, plan, blame his friend, and be tired of everyone's malarkey while he tries to figure out a way to get back home. Step one of that plan? Survive.