Store on database vs Retrive data from network

I working on my app that uses "The movie database API". This app just parse a json from the API and gets each movie information. My question is what the better way to that.

First alternative is to build syncAdapter, check for updates each day for example, store all movies information on local database and update the UI from database.

Second alternative is just retrive the information from network on each request and update the UI.

Can anyone explain me wich way is better and why?