Wolfie trains Oso to follow Dotty without letting her see him. But during his mission, he loses sight of her. That's when Oso gets a special alert. Two brothers, Luis and Miguel, are shopping for a piñata for their sister Mariana's quinceañera (15th birthday party). Neither of them know how to prepare the piñata for the party. So it is up to Oso to help them get the piñata ready for Mariana's quinceañera before the guests arrive.
- Luis and Miguel pick out a piñata shaped like a butterfly for Mariana's quinceañera present.
- The episode's title is a reference to the James Bond film Casino Royale.