Speak to Anthony

-337, 48, -48 (Near the entrance of Greenholm by the honey shop)

Speak to Greta

-396, 46, -64

Locate Greta's Purrloin; it's in a bush nearby the river

-432, 48, -11

Return to Greta

Speak with Beth

-357, 48, -75

Pickup the flowers outside Beth's house

Astrid will tell you to go to the Greenholm Temple to test the new Sewaddle Puzzle, enter inside it and follow the stairs down

-476, 34, 59

Complete the Sewaddle Puzzle

Solution: Up, Left, Up, Right, Up, Right, Down, Left, Down, Left, Up, Right, Up

Video Solution: https://www.youtube.com/watch?v=XXBgjpoR6mY

Battle the Guardians

-425, 33, 56

Level Cap 70

Guardian #1 and #2 both use 5 of these pokemon at random

• Level 62 Beartic
• Level 65 Ferrothorn
• Level 65 Jellicent
• Level 66 Accelgor
• Level 66 Golurk
• Level 66 Lampent
• Level 66 Amoonguss
• Level 67 Garbodor
• Level 68 Bouffalant
• Level 68 Braviary
• Level 68 Galvantula
• Level 68 Eelektross
• Level 70 Alomomola
• Level 70 Escavalier

After you've beaten the Guardians and collected their keys, progress to the next room and complete the parkour

Speak with Astrid on the bridge

Battle your rival Danielle

Danielle (Random Order), Level Cap 70

• Level 68 Gigalith
• Level 68 Unfezant
• Level 69 Haxorus
• Level 69 Liepard
• Level 70 Simisage
• Level 70 Emboar

Speak with Astrid once more to complete the quest