When Chris and Martin meet up with a mob of Red kangaroos, they get their car keys stolen by a joey and have to figure out how to get them back from the tricky little guy. As they jump into the life of the roos to search for the missing keys, the brothers realize that animals live in different kinds of social groups and they have important behaviors that keep the group together and safe. But everybody wonders just how safe this search has become, when Chris and Martin get tangled up in a kickboxing match with the dominant male and caught in the middle of a dingo attack.
