It debuted in EP117 and was replaced by the Whiteberry Version of Aim to Be a Pokémon Master in EP192. It has been noted that the OP visuals were used with very little change or rearranging for the third theme song for the English dub, Pokémon Johto.
Opening animation
CD cover of OK!
Synopsis
The Pokémon logo appears on the screen. Ash is seen running. Pikachu appears running with him. Misty appears with them. Brock is seen running too. Ho-Oh and Lugia are flying in the sky.
The group is seen running in the wild. They are passing across a river. They are playing on grass. Gary Oak appears with his Eevee on the screen. Bellossom are seen dancing, an Elekid swings by. Ash, Brock, and Misty are seen at a picnic with their Pokémon. Pikachu, Chikorita, Cyndaquil, and Totodile are with Ash. Flashbacks of Delia Ketchum, Mimey, Professor Oak, Tracey, Officer Jenny, Nurse Joy and Chansey appear. Mewtwo and Mew are seen. Suicune's silhouette appears. Snubbull and Team Rocket are seen, and Jigglypuff sings. Heracross, Pikachu, Togepi, Ledyba, and Hoothoot appear. Ash is in a stadium looking at an unknown Trainer. Chikorita, Totodile, and Cyndaquil are seen. Ash is with Pikachu, and Pikachu uses Thunderbolt. Ash and his friends are seen with lots of Pokémon.
OK! Let's move on OK! If we're together, we'll be all right OK! Even if the winds change OK! Our dream won't!
We've been so focused on getting here We hadn't even noticed The key to the door to a new world Had been obtained before we knew it
Golden sun & silver moon The lady sun and the lord moon Take turns showing their faces And protect everyone
And, then, so...
OK! Let's swallow our fear! OK! With my prized move, "Bravado" OK! Though I don't know their names or voices They are waiting for me! I want to meet them!
OK! OK! Let's move on OK! If we're together, we'll be all right OK! Even if the winds change OK! Our dream won't!
We've been so focused on getting here We hadn't even noticed The key to the door to a new world Had been obtained before we knew it
Golden smile & silver tears Delight and frustration Take turns showing their faces And give strength to everyone
OK! Follow me! OK! Our spirit can't be beaten! OK! Even if we hit a wall OK! This journey won't end!
There are times when I had begun to give up It's not like it's never happened But then my fired-up self from the first morning of my journey Asks me if I'm willing to let things stand
Golden sun & silver moon The lady sun and the lord moon Take turns showing their faces And protect everyone
And, then, so...
OK! Let's swallow our fear! OK! With my prized move, "Bravado" OK! Though I don't know their names or voices They are waiting for me! I want to meet them!
Let's go!
OK! Let's open the next door! OK! With my prized move, "Recklessness" OK! We cried and laughed together My comrades are with me! I believe in them!
OK!!
Trivia
Extended Version
A longer, creditless, 3:29 version featuring the full OK! song exists. The original opening animation is supplemented by clips from the Johto TV series.
The sentences before the chorus make reference to the Pokémon Gold and Silver games, although the word "gold" is rendered as "golden".
Although this song is for the first Johto/Generation IIseason, the lyrics make a reference to a "prideful move" named からげんきKaragenki. This was introduced as an actual move in Generation III (translated as Facade). It is unknown whether this was a simple coincidence or not. However, the song also mentions a move called むこうみずMukōmizu which isn't a real move. So, it could be assumed that the song is merely saying to do an action as if it was a move.
This was the first opening theme to fully feature digitally colored animation. (A portion of The Rivals was also digitally colored.) The actual episodes wouldn't follow suit for another 144 episodes, in Here's Lookin' at You, Elekid.