Rogi gets greedy and drinks all the new engine oil when Hana is not looking. He starts hiccupping and it hinders his work. Worried, Tayo takes Rogi to the knowledgeable subway train "Met" in hopes that he'll know how to stop the hiccups. Met blows his horn to scare Rogi and it works. Rogi stops hiccupping. Rogi confesses to Tayo that he hogged the new engine oil and asks for forgiveness. Tayo consoles Rogi and their friendship becomes even stronger.