Reference article
Boss Challenge
Defeat five boss opponents, each of whom offers racing and battling challenges.
Completing the quest
Defeat five boss opponents, each of whom offers racing and battling challenges.
Quest items
Keep quest items in the inventory until their task is complete.
Rewards
Jelly Coins; 500 bronze-equivalent coins
Related activities
This is one of the 21 side quests in 
Duck Life 8: Adventure. See 
Quests for the full list.