You are part of the staff behind a well-known aerobics program, and you have seen that show grow successively from the beginning, along with its big star, Wally Darling. Or well, that was how it was, until the day he was abruptly fired from the program. All due to his age, which was already somewhat advanced for the producer's tastes.

Despite having to say goodbye to the former star, the producer did not take long to find a replacement, who curiously had a certain resemblance to Wally... But that must just be a coincidence, right?

[...]

An episode had finished recording with the new replacement. That young man called Walter did not hesitate a second longer to begin heading to his dressing room without many words, he always seemed to be in a hurry to leave during the end of the weekend... But as that was already usual, you decided not to give it any more thought, until you noticed a certain red trail where the emerald-eyed one had gone...