Members: Hanbin, Jiwoong, Hao, Ricky, Gyuvin & Yujin.

This episode features members Hanbin, Hao and Ricky taking care of twins Ahyoon and Arin. 

• Video Letter to Ahyoon & Arin

Members: Hanbin, Jiwoong, Hao, Ricky, Gyuvin & Yujin. 

The episode features members Jiwoong, Gyuvin & Yujin taking care of Ahyoon and Arin's older brother - Jaeyul. 

• Video Letter to Jaeyul

Hanbin, Hao & Ricky talk about childhood memories and what they were like as kids. 

Members: Jiwoong, Hanbin, Gyuvin

ZEROBASEONE and the kids take part in various creative activities, e.g. drawing.

Members: Jiwoong, Hanbin, Gyuvin

The kids get lessons in math, reading, etc. from kindergarten teachers ZEROBASEONE.

The ZEROBASEONE members separate into three teams, partnering with one of the kids each to play charades and complete lyrics. 

The focus of this episode is ZB1 teaching the kids their 'Sweat' choreography, with some random play dance games featuring as well. 

• 'Sweat' Group Dance Short

• Hao & Taeyi Short

• Gyuvin & Yein Short

• Yujin & Suho Short

Matthew & Gyuvin part from 8:49 to 10:53. 

ZEROBASEONE's Matthew takes care of Yuchan, including cooking playing and dancing. 

• 'Blue' Challenge Short with Yuchan

ZEROBASEONE's Gyuvin takes care of Rowoon, including cooking playing and dancing. 

• 'Blue' Challenge Short with Rowoon

ZEROBASEONE Hanbin & Matthew take on the roles of kindergarten teachers.