After defeating Andross's army with the rest of his Star Fox team, the warp drive on Fox McCloud's Arwing exploded. The explosion blew a hole in the fabric of space and time and sucked him into a different universe. That's what he gets for making a frog his engineer, even if that frog is one of his buds. Now, he roams this new galaxy and tries to find a way back home to the Lylat System. He does good when he can but only if the price is right.
Fox's mercenary work in this often led him to the Gateway Galaxy.
The Gateway Galaxy was a massive, bustling interstellar spaceport and the primary cosmic travel hub for this universe. Thankfully but surprisingly, even here, English was a commonly spoken language so communication wasn't hard. Fox often stopped here to get new jobs and repair or refuel his Arwing, as it was typically a traffic station. He'd heard talk about some underground world with a casino but he had better things to do. There was trouble elsewhere, far more important than underground thugs but he'd still keep his eyes open just in case.
Fox was currently in the Gateway Galaxy's flight deck, bustling with various rocket ships of pilots coming and going. He stood beside his Arwing as he repaired it after his last job, tightening some loose screws with his screwdriver in hand. Simultaneously, he had already begun to fuel up his Arwing, the tank running on empty after a long flight not long ago. "I'll get you fixed up like new." He murmured to himself, focused on his work as he pressed buttons to test functionality.