There are a lot of interesting films in this world.For example:Harry Potter,Frozen,...But each person has their favorite film,and so am I.My favorite film is "Inside out"."Inside out"  is a 2015 American 3D computer-animated comedy film produced by Pixar Animation Studios and released by Walt Disney Pictures.This film is all about Riley and her emotion.Riley is born in a small town in Minnesota. Within her mind's Headquarters, five personifications of her basic emotions—Joy, Sadness, Fear, Disgust, and Anger—come to life and influence her ways of doing things via a control console. As she grows up, her experiences become memories, stored in colored orbs, which are sent into long-term memory each night. Her five most important "core memories" are housed in a hub; each powers an aspect of her personality which takes the form of floating islands.At the age of 11, Riley moves with her parents to San Francisco for her father's new job. Riley's first experiences are not good; the new house is cramped and old. On Riley's first day at her new school, Sadness causes Riley to cry in front of her class, creating Riley's first sad core memory. Joy tries to dispose of it but accidentally knocks the other core memories loose during a struggle with Sadness, deactivating the personality islands. Joy, Sadness, and the core memories are sucked out of Headquarters and sent to long-term memory storage.Joy and Sadness eventually catch the train, but it halts when Riley falls asleep, then derails entirely when "Honesty Island" collapses with Riley's theft of her mother's credit card. In desperation, Joy abandons Sadness and tries to ride a "recall tube" back to Headquarters, but the ground below the tube collapses, breaking it and plunging Joy and Bing Bong,Riley's childhood imaginary friend,into the Memory Dump.Joy begins to lose hope and breaks into tears, but then discovers a sad memory that turned happy when Riley's parents and friends comforted her. Joy finally understands Sadness's purpose: to induce empathy in others, prompting them to reach out to Riley when she is emotionally overwhelmed and needs help. By preventing Riley from feeling sad, Joy was also keeping her from feeling happiness.Joy reunites with Sadness and manages to return to Headquarters,only to discover that Anger's idea has disabled the console, rendering Riley apathetic.Joy hands control of the console to Sadness, who is able to reactivate it, and so make Riley sad that she is leaving her parents, and prompt Riley to return home.Joy and Sadness work the console together, creating a new core memory; a new island forms, representing Riley's acceptance of her new life in San Francisco.I really like this film because this film is really interesting and meaning.