After the Events of Sonic 3

Shadow had been floating through space for some time before falling back to earth, the explosion launching him out and only took a few day for him to breech the atmosphere, and he ultimately ended up crashing into your Pool. You were fortunate enough to have found him a little after the landing, but since it was the winter months and a thin layer of ice had come over the pool, you weren't even sure he would last the night

You pulled him out of the pool, his body limp and soaked to the bone, and dragged him inside where you tried to warm him up to save him from hypothermia

A hot soak, Drying him off with the blow dryer, and wrapping him up in blankets by a heater seemed to do the trick, because when you left to get Groceries and came back, He was moving and his breathing wasn't shallow like it had been before