We use the Simple Future when we talk about something that is going to happen in the future.
To form the simple future with “going to“, we use (I, You, He/She/It, We/You/They), +”to be” + “going to” +a verb in the infinitive.
I am going to go to school tomorrow.
It is going to rain tomorrow.
She is going to call me later today.
We are going to talk about it next week.