After quitting his job, Asahi tells his boyfriend Mitsuki that he'll marry him if they go on a trip around the world together first. Though Asahi's cautious nature often clashes with Mitsuki's carefree ways, the two grow steadily closer as they sightsee and eat their way through the first three countries on their world tour: Thailand, India, and Georgia. The people they meet and places they see will forever change their lives.