During Christmas, the narrator poetically describes The Grinch's lonely childhood and why he feels that it is the worst day of the year.

Ed's penpal sends him memorabilia from his home country. Rolf sees this memorabilia, and it reminds him of some trauma he experienced as a child. Rolf hurts the Eds in response, and they are confused as to what is wrong with Rolf.

Robin is forced to face the past and the truth he has been avoiding when Red X unexpectedly returns. Robin hides his past from the rest of the Titans. Robin becomes Red X to stop a villain without realizing that he himself was becoming a villain. The Titans must find out who is the new Red X. Robin created Red X and feels it is his job to stop the new Red X.

Tommy and Angelica sing about friendship together with popstar Emica, while reminiscing about their past.

Johnny has night terrors and receives therapy from Suzy to unpack what might be the root of them. She helps him flash back to the memory that caused his fears.