The members receive a mission to find Torong, who ran off with Jade Emperor’s corporate card, in Abu Dhabi. Through the first game, guess the bread, they decide whether to dress as a spy or as their past selves. On the day of their departure, Eun Ji realizes that she forgot to bring their most essential item, making the rest of them panic. Will they able to overcome this crisis?

In this episode, for the first game, there's a fancy royal set that the royals of Abu Dhabi enjoy with a total of 18 Middle Eastern brunch menus. The members will play simple games, and if they fail to win, they lose one dish at a time. Through a fierce competition for survival, will they be able to try the food in front of them?

They finally get to play the new game called SBA Game, which stands for Strawberry, Banana, and Apple. Why do the members look broken while playing the game when they are good dancers? They play the new game for local snacks and even a laptop! Then the Morning Mission for a digital detox begins. They have to say "Good morning" exactly at 8am without their phones. With their electronic devices gone, they turn into TVs. How will the members go through the night without their phones?

The members go downtown in disguise to chase after Torong. They perfectly hide their identities with local makeup and clothes. They finally get to taste the gold coffee Torong tried at a luxurious eight-star hotel. Then they play Answer in a Row, where only one person who gives the correct answer can enjoy boiling seafood. With the crazy speed and numerous wrong answers, the evening game gets more thrilling.

Cheol Yong, whom the members trusted, betrays them and runs away to Lisbon, Portugal, the mecca of backpacking. For perfect infiltration, the secret agents try to disguise themselves as backpackers. For many different types of backpacks, they play Reverse Perfect Pitch where perfect pronunciation and key are important. Will the members win the backpack they want and head to Portugal? Before the flight to Lisbon, Young Ji challenges the production crew to a battle of cooking ramyeon. If Young Ji wins, she can finally put an end to her digital detox and get her phone back. Will she be able to win the match and dive into the world of dopamine again?

In Portugal, the country of Ronaldo, the members play the 2-on-2 Charades to get a soccer uniform. There's no time limit, and the game continues until they answer all the keywords correctly. It never ends no matter how frustrating it is. After the unprecedented chaos, which team will win the game and get to buy a soccer uniform? Then the new game Three-Syllable Karaoke begins, which requires their perfect teamwork. They have to win the game in order to enjoy Koreans' beloved Portuguese dishes, Arroz de Marisco and gambas a guilho! They must succeed in the game with a perfect sense of rhythm and pitch. Will they be able to pull off the new game and enjoy a lovely dinner?

The E-cade members start their first self-guided tour in Lisbon for the photography contest where they should submit photos with the theme of three Ps, purity, passion, and Portugal. Eun Ji finally forgets about her babysitting duty and enjoys her free time. Yu Jin only thinks about the members even when she's alone. Mimi and Young Ji are attacked by pigeons when they are off guard. Who will win the photography contest and become the ending fairy of the episode? Then they start a romantic beer-bike trip near the Tagus River. Only the ones who answer the questions about general knowledge can stop pedaling and enjoy beer. At a famous restaurant beloved by Ronaldo and many celebrities, the E-cade members try the Guess Who quiz for Portuguese specialties. While Mimi shows a remarkable performance, Yu Jin is having a mental breakdown?

The production crew, who is exhausted by the E-caders’ high energy, rises in revolt and plays the 4-on-4 mini-curling game against the members. If the E-caders lose, they will go on the Mouth Detox! A match for the production crew’s eardrums. Who will be the winner? In the middle of the Thieves' Market, NANA Souvenir Shop is open. They must give the correct answers to buy the souvenirs they want! While they play the games with a lot of complaints, Torong and Cheol Yong’s traces are found! They must go to the Riddle Master to catch Torong. A large-scale chase across Lisbon continues. At night, the members finally meet Korean food after six days of their trip. They must succeed in the Complete the Word game to enjoy the food of their hometown. Will they be able to pull off the mission and have Korean food for dinner?

A new mission customized for the E-cade members begins. They must get 1 million views in 10 minutes. If they succeed, they can enjoy Digital Flex. But if they fail, they will get a penalty of Mouth Detox, where they have to remain silent during lunch. The behind-the-scenes stories of the “Give Me My Money” challenge are finally revealed. After lunch, they move to Albufeira, a famous vacation spot in southern Portugal. They enjoy the peaceful moment with the blue sea and dazzling sunlight. With the romance fully charged, they start Earth Arcade’s signature game, Random Play Dance, which they have been waiting for two years. They throw a crazy dance party with franchise delivery food on the line. Things are heating up with their breathtaking performances. What is the music that surprises everyone?

The members carry out individual morning missions in secret. In order not to have their missions caught, they pretend to have different missions. The penalty for those who fail the missions is running 5km. Later, they visit a winery in Portugal, where they play various new games to win wine and gimbap.

The E-caders are ready to wrap up Earth Arcade 3 with a big gonggi battle with everything on the line. While the members’ wish will be granted if they win, the staff prepares an even bigger penalty for their loss that shocks the team. After coming back to Korea, the E-caders hold a bizarre rooftop party to celebrate the end of the season and play a game of curling to determine who will get to keep what from their journey in Portugal.