On the last day of their "Reply 1988" celebratory vacation in Phuket, Thailand, Ahn Jae Hong, Ryu Jun Yeol, and Go Kyung Pyo were surprised by the Youth Over Flowers team who took them to Namibia. Park Bo Gum, who had returned to South Korea early to film "Music Bank," was "kidnapped" at the end of his recording session. The four stayed in Namibia and Zimbabwe for 10 days. (Source: Wikipedia, MyDramaList)