Plot patterns have been categorized differently by various authors.
Some recognize as little as three basic plot types, others list dozens of possible scenarios.
Beside the quest, love, and revenge, a classic motive for a novel is ADVENTURE.
An adventure plot requires the Lead character to leave his/her comfortable routine to go seek something. The object of his research is usually not specific, as it would be in the quest, it's more a desire to find out what's out there waiting to be discovered and experienced.
Being myself a follower of this philosophy, I lived more than half my life wandering aimlessly from country to country. The main incentive to pick the next stop is the absolute not-knowledge of its habits and inhabitants.
I usually get stuck with some place in my head for no particular reason. Right now, I desperately want to go to Buenos Aires. Why there? I don't know anybody, I don't know anything about the town or its surroundings, I would feel lost and have to start from scratch.
And that is exactly why I will probably be in Argentina by the end of the year.
The impulse is irresistible, and it is a known psychological condition called DROMOMANIA.
As Michael Pallin says in his book "Around the world in 80 days":
"The compulsive urge to travel is a recognised psychical condition. It has its own word, dromomania, and I'm glad to say I suffer from it"
Send your Lead on a journey
Make your Lead character a dromomaniac setting out on a journey to experience a new life.
Your plot should include various encounters with interesting characters and circumstances.
Make sure the Lead learns something about him/herself and grows wiser thanks to the experience.
Have a good novel!