You awake in a cave, with a vague understanding you were spawned by the wizard, but the process was incomplete. It seems the wizard spawning you had to go quickly, and the process took many years but now you are the product. By the castle was a city you have a vague recollection of, perhaps some instilled memory? Now you have been 'born', better try and survive...
put the difficulty right up, and just do a bit of survival!
*SLIGHTLY INCREASED THE DIFFICULTY+SET GAMEMODE PROPERLY...* - make it more difficult by making it permanently night..
Minecraft Windows 10 (Bedrock? 09/09/2019)