They made it to Gravity Fall and they saw Soos and Wendy surrounded by Dream Eater, they fighting them and defeated them
Sci-Ryan: Are you okay?
Soos: Thanks dude.
Crash: What happened here?
Wendy: Gideon is taking over Gravity Fall with those strange Creatures, and we have to stop him for this.
Sci-Ryan: Don't worry, we can help you.
Soos: Thanks, dude. Come on.
They went off and they found Gideon
Gideon: Well, look who's here.
Wendy: You can't take over Gravity Fall.
Gideon: Oh Really? How about this!
He summon a Giant Dream Eater and they defeated it
Wendy: Man, thanks for saving Gravity Fall.
Sci-Ryan: You're welcome.
They left and they saw Clyde Bandicoot
Crash: Clyde Bandicoot. Did Xehanort pick you?
Clyde: Yes, Crash. He taught me everything he know.
He left to the Portal and then they saw a Keyhole so they seal the Keyhole