Michael Seater was one of the stars who played the two oldest children in a TV series which had a 2010 movie based on it.
Vacation with Derek is a 2010 Canadian television movie based on the TV series "Life with Derek". 
Life with Derek is a Canadian television sitcom that aired on Family (English) and VRAK.TV (French) in Canada and on Disney Channel in the United States. 
 The series stars Michael Seater and Ashley Leggat as the two oldest children in a stepfamily. 
