Across the barrier

Elio Hollow and Nicholas Claus have been rivals for as long as anyone can remember-Halloween's chaos clashing with Christmas's order. But when the magical barrier between their worlds begins to crack, threatening both holidays, the two are forced to work together for the first time in years. As they uncover long‑buried truths and step into each other's worlds, they discover that the line between enemy and ally isn't as clear as they were taught.