from the Google Play Store. Due to the closure of Telltale Games in 2018, all seasons were delisted on June 25, 2019.
You will likely download two items:
Locate the APK file in your Downloads folder and tap it to install. Do not open the game yet. Opening the game before placing the OBB files will result in an error. Download Minecraft- Story Mode - OBB Cache - v1.37