The Potato War

ARTHUR (7) hates his little sister INGRID (3), but when a witch kidnaps her along with his favourite toy he embarks on an adventurous journey to get them back. He goes undercover as a spy, escapes a prison, and fights an army of potatoes to overcome the sibling rivalry and learns to love Ingrid.
ARTHUR (7) is on vacation on a potato farm and he hates his little sister INGRID (3). He just wants to play with his favourite action figure but Ingrid steals it and gets kidnapped by a creature. He is afraid to follow and get his figure back, but with support from the Farmer he ventures down into an underground hotel led by a Witch that uses magic to control the potatoes as her minions. Arthur goes undercover and infiltrates the hotel, but his cover gets blown by Ingrid. What he thought was a hotel is in fact a prison which holds all the farm animals captive and the farmer and the witch are actually siblings fighting over the last memory of their parents. Now Arthur must conspire with his fellow inmates to get his figure back and escape. But just before he succeeds Ingrid gives him a hug of love and now he knows that he can’t leave her behind. With his figure and all the farm animals he fights the witch’s potato army and is able to reunite the witch and the farmer and save Ingrid.