When the Croods find a man frozen in a block of ice, they thaw him and discover he was an old flame of Gran's!

Determined for Grug and Guy to bond, Eep plans a hunt for the three of them. But when Eep sneakily makes it appear that Guy saved Grug from a charging bearacuda, the two believe Guy is a master hunter, and head to hunt a dangerous scorpulion.

When Grug saves Hope's life during a dangerous mountainside tartichoke harvest, rather than feeling grateful, Hope is desperate to save Grug's life in order to not be indebted to him.

Determined to show Hope that she's just as good a cook, Ugga decides to cook a meal that will wow the farm residents. But when Ugga realizes she's out of her element, she turns to the punch monkeys for help.

Gran announces it's time for a Thunder Sister retreat at Camp Thunder to strengthen their team building skills, but Gran takes it too far when she puts the sisters through a dangerous trial.