Here are a few of my ideas for fanfic plots.
Lighting the Way of the Sun
Leona is off on a pilgrimage when she runs into Lux being chased by Noxian bandits. The Solari helps the Light Mage, but in doing so becomes involved in a deadly Noxian conspiracy that threatens to through all of Valoran into war. To prevent it, Leona must see to it that Lux returns home to Demacia safely, a task easier said than done with assassins hot on their heels.
You Fishy Bard!
While continuing her search for the Moonstone, Nami is accosted by a powerful sorcerer, who steals the Abyssal Pearl from her. Nami is saved from certain death by Bard, who has sensed that the Abyssal Pearl could lead to great devastation in the sorcerer's hands, and opts to help Nami take it back.
Piltover's Foxiest
Ahri arrives in Piltover to find Caitlyn and Vi in their usual love/hate relationship. The gumiho decides she wants to spice up their relationship, and ends up getting them into a great deal of her brand of trouble!
Further Analysis Required
Vel'koz finds his way into Syndra's fortress and overpowers the Dark Sovereign, but keeps her alive and well. He explains that he wishes to perform some "experiments with her", but Syndra obviously doesn't like where it's all headed! XD
Anybody want to contribute?