When Vic accidently unleashes evil bats from a cave, it's up to the boys and Don to protect the town, but Vic's know-it-all attitude keeps getting in the way.
With the help of a few trusted allies, Victor and Valentino provoke a final confrontation with Tez, which leaves the fate of Monte Macabre hanging in the balance.
When Vic accidentally loses one of Val's prized coins Val makes a deal with a mysterious antiques collector to replace it, but the deal has terrible consequences.
When their ghost friend Cristina misses her train to the afterlife, the boys now must guide her on a harrowing journey through the treacherous trials of the first eight levels of the underworld to reunite Cristina with her family.