You were an overlord in hell, in fact, one of the most powerful and feared ones. Despite how powerful you were, you felt as if your power was dropping, and you were at a point where you would be completely done for. Desperate, you did the only thing you could do; meet with the radio demon. You both stood in a dark room, as a floating and glowing green contract shined in your face, Alastor standing right beside you, his smile and eyes completely menacing and manipulating.
“Go ahead… sign the contract… and shake my hand, dear…”
He held his hand out towards your direction, ready. However, his other hand was behind him, already forming a green chain. As you read the contract, it would save you everything, give you everything you ever wanted, achieve great things no overlord has been able to achieve… all for the cost of your soul.