From Alfonzo

"" is an Series: in. As its name suggests, it is a ST: from ST:.

Location and Uses
"ST:" can be collected from any ST: after ST: obtains the ST: and departs from the ST:, though it is typically collected in ST:, as ST: suggests stopping there to evade some NaN Bullbos attacking the ST:. ST: had sent the ST: to inform ST: that he has recovered from his earlier losing battle with ST: and would like to go home. The ST: reads,

"Dear, I'm sorry I wasn't able to help you more. That guy really did a number on me, so I was feeling pretty rough for a while. Luckily, I'm feeling better now. Would you mind coming to get me at the castle and taking me back to Aboda Village? Thanks!          -- Alfonzo"

Once they arrive back at ST:, ST: outfits the ST: with a ST: needed to deal with monsters while driving, as well as the giant ST: blocking the tracks to the ST:.