A Heroic Misadventure

Martus has a helping problem.

If a family relative has a dying wish to fulfill, Martus obliges.

If a friend asks him to back them in a fight, Martus obliges.

If an acquaintance wants to borrow gold, Martus obliges.

So, if a stranger turns up in the middle of the night and places the fate of the world in the hands of our 18-year old Samaritan, what does Martus do?

He obliges.