So here, one night, Ringo and Randel's house was broken into.
Randel was beaten unconscious and Ringo had to fend for himself.
The intruder was arrested, but, Ringo suffered serious damage to his brain, thus making it mandatory for him to stay at a mental hospital.
He can't remember who anyone is, nor can he recall why he is even there in the first place.
Jeremy, who is Ringo's doctor, hopes to fully repair his brain.
Over time, however, Ringo will slowly remember his past life, and he won't take the faint images and hallucinations very well. But, regardless of how much he regains his memories on his own, he won't recognize Randel.
Don't worry. This scenario does end with Ringo fully recovering, but it's going to be a long and bumpy ride until that day comes...