Stowaways

Stowaways is the fourth and so far the last PSA, being released on April, 20th 2017.

Plot
Warning: This section of the articles contains spoilers for the PSA, please watch the episodes beforehand or read with caution

Lider and his friends are laughing hard in the back of the train car when a old woman prepares to sit down next to him, but he slams his leg down onto the seat, mocking her for not being fast enough to get her seat. Patsanka notices something going on with Gromila and his crush, and points to the scene. Unfortunately, a ticket man came and asked for their cards, the White haired woman agreed but Gromila got over protective and showed off his muscles, annoying her. The gang gets thrown out of the train and knocked over by a group of rams nearby the station.

Over at Numskullmart, Lider explains the situation to the shopkeeper, who then shows the gang a spray can. To demonstrate what it does, he uses it on Melkiy and turns him invisible.

Back on the train, the Ticket man sees the group and is confused by their reapperance. The friends then spray themselves with the invisible spray can, turning themselves invisible. This further puzzles the Ticket man. Just then, a buff guy looking for a seat is directed by the Ticket man to sit where the troublemakers once were. As a result, he puts his heavy bag on one seat, crushing Lider and Patsanka, sits on the other seat, crushing Gromila, and puts his weight bar in the middle, crushing Melkiy. Once again, they all get kicked out.

Lider comes back to explain to the Shopkeeper what happened to them previously. In exchange, the Shopkeeper gives the gang some hoverboards. Once again, they are back in the train car once again. As soon as they notice the Ticket Man, they use the hoverboards to escape but the old lady from the first uses her yarn to get them to trip. They are all thrown off once again, and Lider gets pooped on by a bird

Back at Numskullmark, the Shopkeeper gives them a snake and flute, which they use to charm the snake to scare away the Ticket man, but he uses a whislte to charm the snake to not attack him, and then the snake attacks the gang despite them trying to charm the snake again, but to no success. The gang is then thrown off the train for the final time as the snake wraps up and eats the fools, as they are then shown to have been swallowed by the snake.

Video
You can watch the video here:

Trivia

 * This is the only PSA to be released in 2017, as the others were released on 2016