The Supporters

This story is about three protagonists who were sent to another world along with many other people by the God of Rebirth. This God explains to them, they were chosen to fulfill a purpose. If they if fulfill their purpose they'll be able to return back to their home world. Each person who was chosen had a specific class to match their purpose. And out of these all of these classes, our protagonists had these three. There was a medic, a healing class that can not use magic. There was a tinkerer, a crafting class that can only fix minor repairs. There was a dancer, a bard like class that can not play music. With these three classes, what type of adventure occur?