[5] The second half of the album, Never Gonna Dance Again: Act 2, was released on November 9, 2020, alongside lead single "Idea", which includes vocals by BoA.

Taemin envisioned the series as a "cinematic story," comparing the separate parts to a movie and its sequels that can stand alone but form a complete narrative when brought together.

[12] "Black Rose" features rapper Kid Milli, and combines dark and colourful keyboard sounds with lyrics referencing a solar eclipse.

[13] The final song on the album is prologue single "2 Kids", and includes lyrics written by Taemin concerning painful memories of love as a child.

It is described as an electropop song with warm guitar sounds, and is noted for showcasing a more emotional side to Taemin's vocals in contrast to his usual intense performance style.

Taemin described it thus: "instead of 'being trapped in a cave' and living in the shadow of the truth, I want to free myself from the darkness and embark on a journey of enlightenment where I discover a new ego, identity and meaning.