Another Rung Higher

Felix Graves is a victim of Hodgkin's Lymphoma.
(If you do not know what that is, Google it)
Through his life he has climbed and gone down the "Slide" several times.
When he met Winter Crevice,he was at the bottom.
Winter had never taken a step onto the "Slide" in her life.
When Winter bumps into Felix in an old movie theatre parking lot, they form an instant bond.
Together,the two of them climb to the top of the "Slide" one rung at a time.
That is,until Felix is unable to hang on any longer and falls of the
"Slide".