Ko Cha Pa Na Ko

The story of a group of students and a young hunter named Ko who went to give things to a hill tribe child but got lost. They entered the cave and an earthquake caused them to go back in time and there were bandits who chased them to the past. Will they be able to return to the present world or not?
(Source: Thai = drama.storysiam.com || Translation = msbrightside at MDL)