In a role reversal that is challenging for any young adult, Ali has become a caretaker to her mother’s delicate mental health. Scarred by the past, she chain smokes, refuses to learn to drive, and is terrified of falling in love. Ali spends her days working in a supermarket and the rest of her time off on misadventures with her friend. But when she meets Julio, her tough veneer starts to crack and she may have to amend her strict rules of non-engagement.
The story of "Captain Thunder and the Holy Grail" is set during the Third Crusade in Palestine, when Captain Thunder finds in the dungeons of a fortress a dying Christian named Juan de Ribera, who entrustes him the mission to restore to Spain a cup which is the Holy Grail, stolen from an ancient order. Thunder, with his inseparable friends Crispin and Goliath, and a Viking princess named Sigfrid, will face an evil feudal lord and his black "devils", who are terrorizing the population of low Aragón.
Elderly author Guzmán is tasked with taking care of his teenage grandson David for a few days while his mother is out of town. The two are virtual strangers, having met only a few times during the boy's whole life, as a consequence of a deep rift between the cantankerous old man and David's mother. Over the course of the next few days, bonds begin to form and each sees values in the other that they'd never considered before. The question is, can this trend continue?