Lee Ji Eun, popularly known as IU, became the fourth guest in the latest variety program, "House on Wheels." The trio host welcomed IU with a day full of laughter and surprises in the latest episode on July 23.

The program includes cast members Sung Dong II, Kim Hee Won, and Yeo Jin Goo. They go traveling around Korea through a portable home and bringing people who are special to them.

This was a special day for Yeo Jin Goo who is IU's co-star in "Hotel Del Luna" and with Sung Dong II, who is her co-star in "Moon Lovers: Scarlet Heart Ryeo."

Sung Dong Il teased Yeo Jin Goo, saying, "The guest coming today acted with you before as ''lovers." For this trip, you're going to be in charge of everything."

Yeo Jin Goo prepared the portable homes tarp and deck ready, while Sung Dong Il scheduled a paragliding experience for her.

As IU arrived, she gave them gifts she had prepared at home, which includes organic vegetables grown by her mother, coffee that her father had roasted himself, and side dishes from her mother as well. Another present was a foldable cart with sticker decorations of the trio.

The trio rested under the shade with IU, sitting beside Yeo Jin Goo. They talked about coffee and IU's family. IU shared in the conversation that they have a "Hotel Del Luna" group chat. Everyone agreed that Yeo Jin Goo became more fun and livelier when he joined the variety show.

Yeon Jin Goo felt happy to hear about it and responded that he is doing well with his brothers on the set. He then shared on his instagram acoount of their memories together.

After their talks, the four went on paragliding, and IU felt nervous about it. With a smile, she mentioned that she never imagined it would happen. Yeo Jin Goo replied, "Me neither! I had no idea we'd go paragliding."

IU screams in excitement as she soars in the air while paragliding and she calls Yeo Jin Goo to be near her to make a little chat while up.

"Are you enjoying and having a good time?" She yelled to Yeo Jin Goo. Then, his partner got them closer together by spinning around, while IU watched in surprise.

"I am doing okay, but the spinning is the best," said Yeo Jin Goo with his thumbs up.

She enjoyed the green scenery and IU remarked, "This will be a great memory. I had no idea I will ever experience a day like this in my life."

After their unforgettable experience, the got back at the portable house. Aside from preparing the set for his co-star, Yeo Jin Goo also cooked something for IU. While he is busy inside the house cooking, IU watched him over the window. He then laughingly commented, "I get nervous if you watch me!" IU laughed back.

Watch out for more as their trip will continue in the next episode of "House on Wheels," which airs on Thursday at 9:00 p.m. KST.