Season 1

A design school called SMK Ayer Dalam has a "3 Merah" class which is famous as a class that has a variety. No teacher wants to teach in this class because their students are known for their very naughty attitude, like to make noise and their worst academic results in the school. Their least favorite subject is English.

Finally, an English teacher named Henry Middleton (played by Zain Saidin) appeared. Henry's unique and encouraging way of teaching has been able to attract the attention and interest of students to learn English.

Season 2

Mr. Middleton has changed his mind not to return to the UK. He continued his work in Class 3 Merah, and learned more about his 'new home' country.

Season 3

Oh My English see you again with the 3rd season! This season students travel outside the school grounds, moving into the future, and the past as well as tours outside Ayer Dalam. On episode 22, OME brings a special guest there is The Miz

Season 4 - Class of 2015

Class 5 Merah will face the SPM examination. The relationship between Mr. Middleton and Cikgu Ayu are increasingly threatened due to the presence of new teachers. Taylor Marie Smith from America has participated in the student exchange program to SMK Ayer Dalam.

Season 5 - After School

See Yew Soon has been kidnapped by a mysterious man who wants SYS to be his protégé. See Yew Soon needs help from Zack and Jibam. They are also accompanied by an A.I virtual watch that is Mia who often corrects their English.

Season 6 - Level Up!

Class 3 Merah will receive some new teachers. Among them, Mr. James Blond (Mark Odea) is a confused and unassuming person. At the same time, he tried to win the hearts of the students but his intentions were often misunderstood and caused harm to himself. Zack (Juzzthin) and Jojie (Nadiya Nisaa) returned to SMK Ayer Dalam but now they are teachers. Ms. Jojie teaches Physical Education (PE) and Mr. Zack teaches Music Education.