Important Thing!

Important Thing! is the twenty-first Trouble Center mission in Paper Mario: The Thousand-Year Door, initiated by Frankie. It is first available after clearing Chapter 6.

Mission
Mario must head to the west side of Rogueport near the vent entrance and talk to Frankie, who tells him that he dropped his Wedding Ring in Rogueport. Mario must cross the stream near Garf's house with Mini-Yoshi and recover the Ring that he must take back to Frankie. After giving the Ring to Frankie, he rewards Mario with a Gold Card, and the trouble is solved.

In-game description

 * "I'm lookin' for somethin'. I can't say exactly what here, but I can tell you in person. I'm waitin' on da west side of Rogueport."