Book Four: Duet

01 The Twin Tapes Episode 115th April 2021 Once great friends, Ryan and Min-Gi's relationship slowly dissolves over the course of years of disgruntlement, culminating with their reunion in the restaurant. 02 The Iceberg Car Episode 215th April 2021 Waking up on the train together, Ryan and Min-Gi are met by Kez, whose mistake has left the boys in a predicament. 03 The Old West Car Episode 315th April 2021 Arriving in a Wild West town, Ryan, Min-Gi, and Kez attempt to escape the locals. 04 The Pig Baby Car Episode 415th April 2021 Ryan and Min-Gi are forced to satisfy Pig Baby with the perfect dessert. 05 The Astro Queue Car Episode 515th April 2021 With a growing rift forming between them, Ryan and Min-Gi attempt to convince a bouncer to let them enter the rave. 06 The Party Car Episode 615th April 2021 With their instruments back, Ryan and Min-Gi have to play their first show since they were kids, but it's no easy emotional feat. 07 The Art Gallery Car Episode 715th April 2021 The boys' disintegrating relationship finally comes to a head when they end up in a haunted art museum with seemingly no exit. 08 The Mega Maze Car Episode 815th April 2021 As the duo nears Kez's home, they are forced to contend both with all their enemies and their messy relationship. 09 The Castle Car Episode 915th April 2021 Having finally arrived at Kez's home, Ryan and Min-Gi learn of her biggest secret and regret. 10 The Train to Nowhere Episode 1015th April 2021 Ryan and Min-Gi are forced to face the truth and a final challenge if they ever want to go home.