Sophie Cepeda (Janella Salvador) is a teenager who struggles after both of her parents died. Sophie blamed God for the loss of her loved ones, until G (Leo Rialp) himself appears to Sophie in different forms to enlighten the latter on the obstacles she is facing.
Initially part of Primetime Bida evening block, Oh My G! was originally planned to replace Bagito. However, the drama later became part of PrimeTanghali block, making it the official successor for Give Love on Christmas. The series was promoted and premiered back-to-back with FlordeLiza and Nasaan Ka Nang Kailangan Kita as part of Kapamilya's "Thank You Day" on January 19, 2015.
On July 7, 2015, teen actress Julia Buencamino, who played Aimee, died after committing suicide.
Extension
The series was supposed to end on July 17, 2015. Oh My G was really down on its last 3 weeks on June 29, 2015, but ABS-CBN extended it for one more week and ended it on July 24, 2015, it was later replaced by Ningning.
Reruns
It aired reruns on Jeepney TV from November 25, 2019 to February 21, 2020; August 9, 2021 to January 28, 2022; and March 4, 2024 to June 7, 2024.