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Season guide

Infinity Train: Season 4

10 episodes Premiered Apr 15, 2021 Updated Sep 21, 2026

Infinity Train Season 4 continues the overarching saga across 10 episodes.

Previously on Infinity Train

Season 4 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • Picks up essential narrative continuity directly following the events of Infinity Train Season 3.
  • Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
  • Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
  • Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.

Season overview

Infinity Train Season 4 continues the overarching saga across 10 episodes.

Season 4 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 4 Progress Shield

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Binge Efficiency Engine

Season 4: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

30%
70%
Mytharc (3): Crucial lore & season climaxes
Core (7): Character development & subplots
Side Quest (0): Standalone / filler
S4·E1 Mytharc

The Twin Tapes

Apr 15, 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.

S4·E2 Core

The Iceberg Car

Apr 15, 2021

Waking up on the train together, Ryan and Min-Gi are met by Kez, whose mistake has left the boys in a predicament.

S4·E3 Core

The Old West Car

Apr 15, 2021

Arriving in a Wild West town, Ryan, Min-Gi, and Kez attempt to escape the locals.

S4·E4 Core

The Pig Baby Car

Apr 15, 2021

Ryan and Min-Gi are forced to satisfy Pig Baby with the perfect dessert.

S4·E5 Core

The Astro Queue Car

Apr 15, 2021

With a growing rift forming between them, Ryan and Min-Gi attempt to convince a bouncer to let them enter the rave.

S4·E6 Core

The Party Car

Apr 15, 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.

S4·E7 Core

The Art Gallery Car

Apr 15, 2021

The boys' disintegrating relationship finally comes to a head when they end up in a haunted art museum with seemingly no exit.

S4·E8 Core

The Mega Maze Car

Apr 15, 2021

As the duo nears Kez's home, they are forced to contend both with all their enemies and their messy relationship.

S4·E9 Mytharc

The Castle Car

Apr 15, 2021

Having finally arrived at Kez's home, Ryan and Min-Gi learn of her biggest secret and regret.

S4·E10 Mytharc

The Train to Nowhere

Apr 15, 2021

Ryan and Min-Gi are forced to face the truth and a final challenge if they ever want to go home.