Story Mode

Story Mode is the primary campaign area in the game. It consists of 8 "chapters", each with 8 stages. Each stage has both normal and heroic difficulties. Completing a stage with 3 stars (no monsters on your team died) grants you the ability to instantly acquire drops from the stage using Raid Tickets.

Normal difficulty
Normal stages drop Equipment and materials for upgrading equipment:
 * All stages drop Equipment of different grades; each stage drops a certain piece (i.e., specific set and slot)
 * Chapters 1-3 drop white-grade equipment
 * Chapters 4-6 drop green-grade equipment
 * Chapters 7-8 drop blue-grade equipment
 * Stages 1-3 and 5-7 drop Raw Iron of different grades
 * Chapters 1-3 drop Basic Raw Iron
 * Chapters 4-6 drop Average Raw Iron
 * Chapters 7-8 drop Advanced Raw Iron
 * Stages 4 and 8 drop Crystal Balls

Heroic difficulty
Heroic stages drop Monster Fragments and materials for upgrading monsters:
 * All stages drop Monster Fragments for 2 monsters (one A grade and one S grade)
 * Stages 1-4 and 5-8 of each chapter drop different monster combinations
 * Stages 1-3 and 5-7 drop Sage's Ink
 * Stages 4 and 8 drop Books of Transformation