Not very much really happens in "Duck Season," but in its rich details, it remembers how absorbing and endless every single day can seem when you're 14. It takes place mostly inside an apartment in a Mexican urban high-rise, where best friends Moko and Flama (Diego Catano and Daniel Miranda) are left alone one Sunday with a big bottle of Coke and a video game. The Coke they share with great care, and the game (Bush vs. Bin Laden) they employ for counterfeit excitement. They're kids killing time.
Then the next act in their lives opens. Rita (Danny Perea) knocks on the door. She says she's 16 but looks older. She wants to use their oven to cook herself a birthday cake. She claims her own stove doesn't work. Maybe, or maybe she wants company. She moves into the kitchen and then into their conversations. The younger teens imply more than they're ready to say, and the older one less than she means. In such a way does emotional information float across the river of time.