Sora and the gang travel to another world and are joined by familiar Disney faces in the newest "Kingdom Hearts 3" trailer.

The trailer, released recently, shows Sora, Goofy and Donald travel to a place familiar to Disney fans: San Fransokyo. That's right, guys -- the lovable Baymax and young hero Hiro from the movie "Big Hero 6" are joining the fray in the fight against the Heartless, CNet reported.

According to the trailer posted by Square Enix, the personal healthcare companion and Hiro, along with their friends, are fighting against the Heartless invading the world of Big Hero 6. This is a brand-new world that's never seen before in the Kingdom Hearts series, and fans are getting hyped by it.

Since the game is now allowing world-specific characters join the fight against enemies in real-time (a series-first feature), fans will see Baymax fighting the Heartless alongside Sora, Goofy, and Donald. This is great eye-candy as there are huge robotic-looking Heartless that seem like a perfect match for the lovable character.

Eventually, as players traverse the Big Hero 6 world, Sora will acquire the Keyblade called "Nano Arms." This Big Hero 6-inspired Keyblade can change its form to become a flying vehicle or a sword. At least, that's what the trailer shows.

Fight scenes in the Big Hero 6 world are set in different places. Some are in the bridge, some atop buildings, and some are in the city streets.

The trailer also gives us a glimpse of several worlds, including "Monsters, Inc." and "Tangled," where the gang gets to interact with Rapunzel and Flynn, in their quest against the Heartless. We are also given a look at some of Xehanort's incarnations.

Gummi Ship sequences that are both fun to watch and even more fun to play are also featured in the trailer. These sequences, which tie one world to another, have destructible asteroids and challenging boss battles.

All of these details are just part and parcel of the huge game that is Kingdom Hearts 3. Speaking to Geek in July, a representative from Square Enix said Kingdom Hearts 3 can be finished in about 40 to 50 hours, as long as players stay on the main storyline.

Of course, fans won't be satisfied with just that, so the representative said an additional 30+ hours are needed to finish the game, including all mini-games and secrets. That makes for more than 80 hours of Kingdom Hearts 3 goodness. Best of all, it will be enjoyable for both longtime Kingdom Hearts fans, and those who don't have an idea about it whatsoever.