I've Traveled All This Way for Something

Stiles and Scott win a trip to Africa - Kenya and Tanzania, including Zanzibar - and brings Allison and Lydia. But it turns out they're not the only ones in the group; Derek and Laura Hale is also along for the ride - all five and a half weeks - and their first meeting didn't exactly go as smoothly as it could have. Title from On Top of the World by Imagine Dragons