With the future of the world at stake, Leo and the Brotherhood wage an epic war against Quetzalcoatl and his Legions of Evil.

When Baba Yaga sends a Golem after one of their own, the gang slips through a portal to the future to save their friend -- and the world.

Marcella helps Alebrije remember where he lost the Esfera. Turns out, it's back in Mexico, where an undead priest is holding it hostage.

Soon after Leo brings a creepy-looking doll aboard the ship, members of the team start going missing ... and Leo starts talking to sugar skulls.

In a bid to strengthen their coven, Baba Yaga and the immortal Nu Gui summon Marcella to a cave in China that's crawling with terra-cotta soldiers.

Determined to locate the Brotherhood, Leo steers the ship to a Japanese village where monsters attack -- and normal rules no longer apply.

Stranded without a ship and still missing Alebrije, the gang tumbles into foggy London and uncovers a plot that's robbing orphans of their teeth.

The team braves a blizzard to find a portal to Quetzalcoatl's world. But striking a deal with a mythical wolf is the only way through it.

While investigating sightings of a strange monster who steals children's souls, Leo and the gang unearth a far more sinister threat.

Leo's compass directs the airship to a desolate Italian town where the locals can see ghosts – including one who turns spirits into stone.

Leo and friends head to Germany in search of the fabled Brotherhood. Instead, they find a "Nicht Mart" who delivers bad dreams.

When a cannon shoots their ship out of the sky, the gang agrees to help an American inventor fight the fire-breathing monster attacking his town.

Leo's gift for seeing ghosts feels more like a curse. But when his loved ones start turning into zombies, he's the only one who can save them.