Yoo Jae Suk had a penalty from 'Infinity Challenge' to join EXO on stage, and now we're getting the preparation story!

He will be on stage with the EXO members on their 1st 'EXO'rDIUM' performance in Bangkok on the 10th and 11th, where he'll be revealing their new, special collaboration song.

The preview for next week's 'Infinity Challenge' showed Yoo Jae Suk preparing with the EXO members by learning the choreography, and also showed the members having a comical dance battle with the 'Infinity Challenge' members as well.

How do you think the special song will be?