"Bottle Episode" is the twenty-ninth episode of Season 3 of Teen Titans Go! and the one hundred and thirty-third episode overall. It first aired on 21 April 2016 on Cartoon Network.
The Titans are trapped in a giant bottle in their living room and spend their time reminiscing.
Beast Boy is playing a video game on the couch when Cyborg, Raven and Starfire approach him. Cyborg asks what he has there and Beast Boy mistakenly thinks he is referring to his shirt depicting a family of turtles, but Raven clarifies that he was asking about the giant bottle in the living room. Beast Boy explains that he found it outside and the Titans gather around the bottle when Robin interrupts, asking for an explanation. Starfire says it's there because Beast Boy put it in the living room, but Robin says that it's a safety hazard and has to go as he doesn't want to spend all day dealing with it. Starfire questions the problem with the bottle, and Robin claims that there's a world out there for them to explore and gives an example of trekking the Himalayas. Cyborg says it sounds expensive and Raven agrees to play with the bottle. Robin demands they get rid of it, but Beast Boy refuses and says Robin has to get rid of the bottle on his own if he wants it gone. Robin struggles to move the bottle when Cyborg enters it, toppling it over. He shouts at Cyborg to get out, but he refuses as he's living the bottle life and is joined by Beast Boy, Raven and Starfire. Robin reluctantly enters after them, theorizing that they can move it from the inside. However, after he enters, Beast Boy puts the cap on the bottle, sealing them inside.
Robin becomes frustrated as they're stuck inside the bottle for the rest of the day, but Raven tells them to think about the money they're saving. He challenges them to make being inside a bottle interesting and Cyborg suggests singing songs. Robin begins performing a sea shanty, but Cyborg and Beast Boy tell him to stop. Starfire notes that his song doesn't sound like the ones they previously performed, and Robin realizes that she is suggesting they simply flash back to their previous songs which he claims is boring. Beast Boy says it isn't to him and advises that they take a moment to remember their favorite songs. After the flashbacks, Robin criticizes the Titans for simply flashing back instead of performing a new song. The Titans ask how he plans on paying for their new adventures, but Robin drops the subject and asks them to help him bust out of the bottle.
Robin runs into the bottom of the bottle, but the Titans refuse to help as they're content. He expresses concern that they'll become boring, but Raven claims they're always doing exciting stuff. Beast Boy begins to flash back, but Robin demands that he stop flashing back. Cyborg tells him that it's too late as they're remembering exciting things and the flashbacks begin. The Titans, save Robin, cheer while Robin tries to uncap the bottle. Beast Boy assures that they're not going to be inside the bottle everyday and Raven agrees, saying they're just taking a breather to catch up. Robin tells her that they'll die of lack of oxygen if they stay inside the bottle, but Starfire says that is the way of the bottle life. Annoyed, Robin resolves to break out, but his attempt to kick through the bottle breaks his leg, causing the Titans to flash back to times where they hurt themselves. Robin notes that they also flash backed to the time he broke his leg trying to escape the bottle. Raven exclaims that they're still fine despite all of those times but the other Titans show off their injuries.
Robin says that there's still time to do something interesting and asks if he has always pushed them to be their best and demanded nothing but excellence, but the Titans are unable to remember. They goad him into reminding them with flashbacks which Robin reluctantly agrees to. Beast Boy realizes that Robin does push them to be the best and Starfire agrees that being in the bottle is boring. Raven decides to help Robin break out and Cyborg lifts him up, asking if he's ready. Robin questions Cyborg, but Beast Boy says they're going on today's adventure with Raven remarking that she hears the Himalayas are nice. Robin agrees and the Titans throw him through the bottle, breaking it. Raven transports herself and the Titans to Robin, who's glad that they escaped the bottle and don't have to rely on past memories. He asks the Titans if they're ready for more adventures and they cheer.
For a full transcript of "Bottle Episode", click here.