Struggling to find their purpose on the Betterman farm, the Croods see an opportunity to prove their worth by harvesting Phil's perilous (and sticky) bounceberries.
After a crowverine gliding mishap, Dawn loses her confidence and tells Eep she's taking a break from adventures. Eep convinces Dawn to join her on one last adventure - climbing Grrr Mountain.
Ugga has a secret - she's taking Eep to "flop with the bulrusses" - a fun and dangerous pastime Ugga enjoyed as a teen. Ugga's excitement fades when Hope invites herself and Dawn along.